Merge pull request #508 from fyrz/RocksJava-Final-Patch

[RocksJava] Final usage correction

java/src/main/java/org/rocksdb/AbstractRocksIterator.java

@@ -23,7 +23,8 @@ public abstract class AbstractRocksIterator<P extends RocksObject>
     extends RocksObject implements RocksIteratorInterface {
   final P parent_;
 
-  protected AbstractRocksIterator(P parent, long nativeHandle) {
+  protected AbstractRocksIterator(final P parent,
+      final long nativeHandle) {
     super();
     nativeHandle_ = nativeHandle;
     // parent must point to a valid RocksDB instance.

java/src/main/java/org/rocksdb/BackupInfo.java

@@ -20,8 +20,8 @@ public class BackupInfo {
    * @param size size of backup
    * @param numberFiles number of files related to this backup.
    */
-  BackupInfo(int backupId, long timestamp, long size,
+  BackupInfo(final int backupId, final long timestamp, final long size,
-      int numberFiles) {
+      final int numberFiles) {
     backupId_ = backupId;
     timestamp_ = timestamp;
     size_ = size;

java/src/main/java/org/rocksdb/BackupableDB.java

@@ -30,7 +30,7 @@ public class BackupableDB extends RocksDB {
    *    native library.
    */
   public static BackupableDB open(
-      Options opt, BackupableDBOptions bopt, String db_path)
+      final Options opt, final BackupableDBOptions bopt, final String db_path)
       throws RocksDBException {
 
     RocksDB db = RocksDB.open(opt, db_path);
@@ -54,7 +54,7 @@ public class BackupableDB extends RocksDB {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void createNewBackup(boolean flushBeforeBackup)
+  public void createNewBackup(final boolean flushBeforeBackup)
       throws RocksDBException {
     assert(isInitialized());
     createNewBackup(nativeHandle_, flushBeforeBackup);
@@ -68,7 +68,7 @@ public class BackupableDB extends RocksDB {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void purgeOldBackups(int numBackupsToKeep)
+  public void purgeOldBackups(final int numBackupsToKeep)
       throws RocksDBException {
     assert(isInitialized());
     purgeOldBackups(nativeHandle_, numBackupsToKeep);
@@ -82,7 +82,7 @@ public class BackupableDB extends RocksDB {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void deleteBackup(int backupId) throws RocksDBException {
+  public void deleteBackup(final int backupId) throws RocksDBException {
     assert(isInitialized());
     deleteBackup0(nativeHandle_, backupId);
   }

java/src/main/java/org/rocksdb/BackupableDBOptions.java

@@ -26,7 +26,7 @@ public class BackupableDBOptions extends RocksObject {
    *     Best to set this to {@code db name_ + "/backups"}
    * @throws java.lang.IllegalArgumentException if illegal path is used.
    */
-  public BackupableDBOptions(String path) {
+  public BackupableDBOptions(final String path) {
     super();
     File backupPath = path == null ? null : new File(path);
     if (backupPath == null || !backupPath.isDirectory() || !backupPath.canWrite()) {
@@ -57,7 +57,7 @@ public class BackupableDBOptions extends RocksObject {
    *
    * @return instance of current BackupableDBOptions.
    */
-  public BackupableDBOptions setShareTableFiles(boolean shareTableFiles) {
+  public BackupableDBOptions setShareTableFiles(final boolean shareTableFiles) {
     assert(isInitialized());
     setShareTableFiles(nativeHandle_, shareTableFiles);
     return this;
@@ -86,7 +86,7 @@ public class BackupableDBOptions extends RocksObject {
    *
    * @return instance of current BackupableDBOptions.
    */
-  public BackupableDBOptions setSync(boolean sync) {
+  public BackupableDBOptions setSync(final boolean sync) {
     assert(isInitialized());
     setSync(nativeHandle_, sync);
     return this;
@@ -111,7 +111,7 @@ public class BackupableDBOptions extends RocksObject {
    *
    * @return instance of current BackupableDBOptions.
    */
-  public BackupableDBOptions setDestroyOldData(boolean destroyOldData) {
+  public BackupableDBOptions setDestroyOldData(final boolean destroyOldData) {
     assert(isInitialized());
     setDestroyOldData(nativeHandle_, destroyOldData);
     return this;
@@ -138,7 +138,7 @@ public class BackupableDBOptions extends RocksObject {
    *
    * @return instance of current BackupableDBOptions.
    */
-  public BackupableDBOptions setBackupLogFiles(boolean backupLogFiles) {
+  public BackupableDBOptions setBackupLogFiles(final boolean backupLogFiles) {
     assert(isInitialized());
     setBackupLogFiles(nativeHandle_, backupLogFiles);
     return this;
@@ -226,7 +226,7 @@ public class BackupableDBOptions extends RocksObject {
    * @return instance of current BackupableDBOptions.
    */
   public BackupableDBOptions setShareFilesWithChecksum(
-      boolean shareFilesWithChecksum) {
+      final boolean shareFilesWithChecksum) {
     assert(isInitialized());
     setShareFilesWithChecksum(nativeHandle_, shareFilesWithChecksum);
     return this;

java/src/main/java/org/rocksdb/BlockBasedTableConfig.java

@@ -38,7 +38,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param noBlockCache if use block cache
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setNoBlockCache(boolean noBlockCache) {
+  public BlockBasedTableConfig setNoBlockCache(final boolean noBlockCache) {
     noBlockCache_ = noBlockCache;
     return this;
   }
@@ -58,7 +58,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param blockCacheSize block cache size in bytes
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setBlockCacheSize(long blockCacheSize) {
+  public BlockBasedTableConfig setBlockCacheSize(final long blockCacheSize) {
     blockCacheSize_ = blockCacheSize;
     return this;
   }
@@ -79,7 +79,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    *     number means use default settings."
    * @return the reference to the current option.
    */
-  public BlockBasedTableConfig setCacheNumShardBits(int blockCacheNumShardBits) {
+  public BlockBasedTableConfig setCacheNumShardBits(
+      final int blockCacheNumShardBits) {
     blockCacheNumShardBits_ = blockCacheNumShardBits;
     return this;
   }
@@ -105,7 +106,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param blockSize block size in bytes
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setBlockSize(long blockSize) {
+  public BlockBasedTableConfig setBlockSize(final long blockSize) {
     blockSize_ = blockSize;
     return this;
   }
@@ -128,7 +129,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param blockSizeDeviation the deviation to block size allowed
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setBlockSizeDeviation(int blockSizeDeviation) {
+  public BlockBasedTableConfig setBlockSizeDeviation(
+      final int blockSizeDeviation) {
     blockSizeDeviation_ = blockSizeDeviation;
     return this;
   }
@@ -146,7 +148,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param restartInterval block restart interval.
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setBlockRestartInterval(int restartInterval) {
+  public BlockBasedTableConfig setBlockRestartInterval(
+      final int restartInterval) {
     blockRestartInterval_ = restartInterval;
     return this;
   }
@@ -166,7 +169,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param wholeKeyFiltering if enable whole key filtering
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setWholeKeyFiltering(boolean wholeKeyFiltering) {
+  public BlockBasedTableConfig setWholeKeyFiltering(
+      final boolean wholeKeyFiltering) {
     wholeKeyFiltering_ = wholeKeyFiltering;
     return this;
   }
@@ -191,7 +195,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param filter {@link org.rocksdb.Filter} Filter Policy java instance.
    * @return the reference to the current config.
    */
-  public BlockBasedTableConfig setFilter(Filter filter) {
+  public BlockBasedTableConfig setFilter(
+      final Filter filter) {
     filter_ = filter;
     return this;
   }
@@ -216,7 +221,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @return the reference to the current config.
    */
   public BlockBasedTableConfig setCacheIndexAndFilterBlocks(
-      boolean cacheIndexAndFilterBlocks) {
+      final boolean cacheIndexAndFilterBlocks) {
     cacheIndexAndFilterBlocks_ = cacheIndexAndFilterBlocks;
     return this;
   }
@@ -243,7 +248,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @return the reference to the current config.
    */
   public BlockBasedTableConfig setHashIndexAllowCollision(
-      boolean hashIndexAllowCollision) {
+      final boolean hashIndexAllowCollision) {
     hashIndexAllowCollision_ = hashIndexAllowCollision;
     return this;
   }
@@ -266,7 +271,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @return the reference to the current config.
    */
   public BlockBasedTableConfig setBlockCacheCompressedSize(
-      long blockCacheCompressedSize) {
+      final long blockCacheCompressedSize) {
     blockCacheCompressedSize_ = blockCacheCompressedSize;
     return this;
   }
@@ -293,7 +298,7 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @return the reference to the current option.
    */
   public BlockBasedTableConfig setBlockCacheCompressedNumShardBits(
-      int blockCacheCompressedNumShardBits) {
+      final int blockCacheCompressedNumShardBits) {
     blockCacheCompressedNumShardBits_ = blockCacheCompressedNumShardBits;
     return this;
   }
@@ -304,7 +309,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param checksumType {@link org.rocksdb.ChecksumType} value.
    * @return the reference to the current option.
    */
-  public BlockBasedTableConfig setChecksumType(ChecksumType checksumType) {
+  public BlockBasedTableConfig setChecksumType(
+      final ChecksumType checksumType) {
     checksumType_ = checksumType;
     return this;
   }
@@ -323,7 +329,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param indexType {@link org.rocksdb.IndexType} value
    * @return the reference to the current option.
    */
-  public BlockBasedTableConfig setIndexType(IndexType indexType) {
+  public BlockBasedTableConfig setIndexType(
+      final IndexType indexType) {
     indexType_ = indexType;
     return this;
   }
@@ -358,7 +365,8 @@ public class BlockBasedTableConfig extends TableFormatConfig {
    * @param formatVersion integer representing the version to be used.
    * @return the reference to the current option.
    */
-  public BlockBasedTableConfig setFormatVersion(int formatVersion) {
+  public BlockBasedTableConfig setFormatVersion(
+      final int formatVersion) {
     assert(formatVersion >= 0 && formatVersion <= 2);
     formatVersion_ = formatVersion;
     return this;

java/src/main/java/org/rocksdb/BloomFilter.java

@@ -49,7 +49,7 @@ public class BloomFilter extends Filter {
    *
    * @param bitsPerKey number of bits to use
    */
-  public BloomFilter(int bitsPerKey) {
+  public BloomFilter(final int bitsPerKey) {
     this(bitsPerKey, DEFAULT_MODE);
   }
 
@@ -72,7 +72,7 @@ public class BloomFilter extends Filter {
    * @param bitsPerKey number of bits to use
    * @param useBlockBasedMode use block based mode or full filter mode
    */
-  public BloomFilter(int bitsPerKey, boolean useBlockBasedMode) {
+  public BloomFilter(final int bitsPerKey, final boolean useBlockBasedMode) {
     super();
     bitsPerKey_ = bitsPerKey;
     useBlockBasedMode_ = useBlockBasedMode;
@@ -80,7 +80,7 @@ public class BloomFilter extends Filter {
   }
 
   @Override
-  protected void createNewFilter() {
+  protected final void createNewFilter() {
     createNewBloomFilter(bitsPerKey_, useBlockBasedMode_);
   }
 

java/src/main/java/org/rocksdb/Checkpoint.java

@@ -23,7 +23,7 @@ public class Checkpoint extends RocksObject {
    * @throws java.lang.IllegalStateException if {@link RocksDB}
    *     instance is not initialized.
    */
-  public static Checkpoint create(RocksDB db) {
+  public static Checkpoint create(final RocksDB db) {
     if (db == null) {
       throw new IllegalArgumentException(
           "RocksDB instance shall not be null.");
@@ -46,7 +46,7 @@ public class Checkpoint extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void createCheckpoint(String checkpointPath)
+  public void createCheckpoint(final String checkpointPath)
       throws RocksDBException {
     createCheckpoint(nativeHandle_, checkpointPath);
   }
@@ -62,7 +62,7 @@ public class Checkpoint extends RocksObject {
     db_ = db;
   }
 
-  RocksDB db_;
+  private RocksDB db_;
 
   private static native long newCheckpoint(long dbHandle);
   private native void disposeInternal(long handle);

java/src/main/java/org/rocksdb/ColumnFamilyHandle.java

@@ -10,7 +10,8 @@ package org.rocksdb;
  * ColumnFamily Pointers.
  */
 public class ColumnFamilyHandle extends RocksObject {
-  ColumnFamilyHandle(RocksDB rocksDB, long nativeHandle) {
+  ColumnFamilyHandle(final RocksDB rocksDB,
+      final long nativeHandle) {
     super();
     nativeHandle_ = nativeHandle;
     // rocksDB must point to a valid RocksDB instance;

java/src/main/java/org/rocksdb/ColumnFamilyOptions.java

@@ -51,7 +51,7 @@ public class ColumnFamilyOptions extends RocksObject
    *     {@link Properties} instance is passed to the method call.
    */
   public static ColumnFamilyOptions getColumnFamilyOptionsFromProps(
-      Properties properties) {
+      final Properties properties) {
     if (properties == null || properties.size() == 0) {
       throw new IllegalArgumentException(
           "Properties value must contain at least one value.");
@@ -74,7 +74,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions optimizeForPointLookup(
-      long blockCacheSizeMb) {
+      final long blockCacheSizeMb) {
     optimizeForPointLookup(nativeHandle_,
         blockCacheSizeMb);
     return this;
@@ -89,7 +89,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions optimizeLevelStyleCompaction(
-      long memtableMemoryBudget) {
+      final long memtableMemoryBudget) {
     optimizeLevelStyleCompaction(nativeHandle_,
         memtableMemoryBudget);
     return this;
@@ -104,14 +104,14 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions optimizeUniversalStyleCompaction(
-      long memtableMemoryBudget) {
+      final long memtableMemoryBudget) {
     optimizeUniversalStyleCompaction(nativeHandle_,
         memtableMemoryBudget);
     return this;
   }
 
   @Override
-  public ColumnFamilyOptions setComparator(BuiltinComparator builtinComparator) {
+  public ColumnFamilyOptions setComparator(final BuiltinComparator builtinComparator) {
     assert(isInitialized());
     setComparatorHandle(nativeHandle_, builtinComparator.ordinal());
     return this;
@@ -119,7 +119,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setComparator(
-      AbstractComparator<? extends AbstractSlice<?>> comparator) {
+      final AbstractComparator<? extends AbstractSlice<?>> comparator) {
     assert (isInitialized());
     setComparatorHandle(nativeHandle_, comparator.nativeHandle_);
     comparator_ = comparator;
@@ -127,7 +127,7 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMergeOperatorName(String name) {
+  public ColumnFamilyOptions setMergeOperatorName(final String name) {
     assert (isInitialized());
     if (name == null) {
       throw new IllegalArgumentException(
@@ -138,13 +138,13 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMergeOperator(MergeOperator mergeOperator) {
+  public ColumnFamilyOptions setMergeOperator(final MergeOperator mergeOperator) {
     setMergeOperator(nativeHandle_, mergeOperator.newMergeOperatorHandle());
     return this;
   }
 
   @Override
-  public ColumnFamilyOptions setWriteBufferSize(long writeBufferSize)
+  public ColumnFamilyOptions setWriteBufferSize(final long writeBufferSize)
       throws RocksDBException {
     assert(isInitialized());
     setWriteBufferSize(nativeHandle_, writeBufferSize);
@@ -159,7 +159,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setMaxWriteBufferNumber(
-      int maxWriteBufferNumber) {
+      final int maxWriteBufferNumber) {
     assert(isInitialized());
     setMaxWriteBufferNumber(nativeHandle_, maxWriteBufferNumber);
     return this;
@@ -173,7 +173,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setMinWriteBufferNumberToMerge(
-      int minWriteBufferNumberToMerge) {
+      final int minWriteBufferNumberToMerge) {
     setMinWriteBufferNumberToMerge(nativeHandle_, minWriteBufferNumberToMerge);
     return this;
   }
@@ -184,14 +184,14 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions useFixedLengthPrefixExtractor(int n) {
+  public ColumnFamilyOptions useFixedLengthPrefixExtractor(final int n) {
     assert(isInitialized());
     useFixedLengthPrefixExtractor(nativeHandle_, n);
     return this;
   }
 
   @Override
-  public ColumnFamilyOptions setCompressionType(CompressionType compressionType) {
+  public ColumnFamilyOptions setCompressionType(final CompressionType compressionType) {
     setCompressionType(nativeHandle_, compressionType.getValue());
     return this;
   }
@@ -202,7 +202,7 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setNumLevels(int numLevels) {
+  public ColumnFamilyOptions setNumLevels(final int numLevels) {
     setNumLevels(nativeHandle_, numLevels);
     return this;
   }
@@ -214,7 +214,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setLevelZeroFileNumCompactionTrigger(
-      int numFiles) {
+      final int numFiles) {
     setLevelZeroFileNumCompactionTrigger(
         nativeHandle_, numFiles);
     return this;
@@ -227,7 +227,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setLevelZeroSlowdownWritesTrigger(
-      int numFiles) {
+      final int numFiles) {
     setLevelZeroSlowdownWritesTrigger(nativeHandle_, numFiles);
     return this;
   }
@@ -238,7 +238,7 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setLevelZeroStopWritesTrigger(int numFiles) {
+  public ColumnFamilyOptions setLevelZeroStopWritesTrigger(final int numFiles) {
     setLevelZeroStopWritesTrigger(nativeHandle_, numFiles);
     return this;
   }
@@ -250,7 +250,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setMaxMemCompactionLevel(
-      int maxMemCompactionLevel) {
+      final int maxMemCompactionLevel) {
     setMaxMemCompactionLevel(nativeHandle_, maxMemCompactionLevel);
     return this;
   }
@@ -261,7 +261,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setTargetFileSizeBase(long targetFileSizeBase) {
+  public ColumnFamilyOptions setTargetFileSizeBase(
+      final long targetFileSizeBase) {
     setTargetFileSizeBase(nativeHandle_, targetFileSizeBase);
     return this;
   }
@@ -272,7 +273,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setTargetFileSizeMultiplier(int multiplier) {
+  public ColumnFamilyOptions setTargetFileSizeMultiplier(
+      final int multiplier) {
     setTargetFileSizeMultiplier(nativeHandle_, multiplier);
     return this;
   }
@@ -284,7 +286,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setMaxBytesForLevelBase(
-      long maxBytesForLevelBase) {
+      final long maxBytesForLevelBase) {
     setMaxBytesForLevelBase(nativeHandle_, maxBytesForLevelBase);
     return this;
   }
@@ -295,7 +297,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMaxBytesForLevelMultiplier(int multiplier) {
+  public ColumnFamilyOptions setMaxBytesForLevelMultiplier(
+      final int multiplier) {
     setMaxBytesForLevelMultiplier(nativeHandle_, multiplier);
     return this;
   }
@@ -306,7 +309,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setExpandedCompactionFactor(int expandedCompactionFactor) {
+  public ColumnFamilyOptions setExpandedCompactionFactor(
+      final int expandedCompactionFactor) {
     setExpandedCompactionFactor(nativeHandle_, expandedCompactionFactor);
     return this;
   }
@@ -317,7 +321,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setSourceCompactionFactor(int sourceCompactionFactor) {
+  public ColumnFamilyOptions setSourceCompactionFactor(
+      final int sourceCompactionFactor) {
     setSourceCompactionFactor(nativeHandle_, sourceCompactionFactor);
     return this;
   }
@@ -329,7 +334,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setMaxGrandparentOverlapFactor(
-      int maxGrandparentOverlapFactor) {
+      final int maxGrandparentOverlapFactor) {
     setMaxGrandparentOverlapFactor(nativeHandle_, maxGrandparentOverlapFactor);
     return this;
   }
@@ -340,7 +345,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setSoftRateLimit(double softRateLimit) {
+  public ColumnFamilyOptions setSoftRateLimit(
+      final double softRateLimit) {
     setSoftRateLimit(nativeHandle_, softRateLimit);
     return this;
   }
@@ -351,7 +357,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setHardRateLimit(double hardRateLimit) {
+  public ColumnFamilyOptions setHardRateLimit(
+      final double hardRateLimit) {
     setHardRateLimit(nativeHandle_, hardRateLimit);
     return this;
   }
@@ -363,7 +370,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setRateLimitDelayMaxMilliseconds(
-      int rateLimitDelayMaxMilliseconds) {
+      final int rateLimitDelayMaxMilliseconds) {
     setRateLimitDelayMaxMilliseconds(
         nativeHandle_, rateLimitDelayMaxMilliseconds);
     return this;
@@ -375,7 +382,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setArenaBlockSize(long arenaBlockSize)
+  public ColumnFamilyOptions setArenaBlockSize(
+      final long arenaBlockSize)
       throws RocksDBException {
     setArenaBlockSize(nativeHandle_, arenaBlockSize);
     return this;
@@ -387,7 +395,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setDisableAutoCompactions(boolean disableAutoCompactions) {
+  public ColumnFamilyOptions setDisableAutoCompactions(
+      final boolean disableAutoCompactions) {
     setDisableAutoCompactions(nativeHandle_, disableAutoCompactions);
     return this;
   }
@@ -399,7 +408,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setPurgeRedundantKvsWhileFlush(
-      boolean purgeRedundantKvsWhileFlush) {
+      final boolean purgeRedundantKvsWhileFlush) {
     setPurgeRedundantKvsWhileFlush(
         nativeHandle_, purgeRedundantKvsWhileFlush);
     return this;
@@ -411,7 +420,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setCompactionStyle(CompactionStyle compactionStyle) {
+  public ColumnFamilyOptions setCompactionStyle(
+      final CompactionStyle compactionStyle) {
     setCompactionStyle(nativeHandle_, compactionStyle.getValue());
     return this;
   }
@@ -423,7 +433,7 @@ public class ColumnFamilyOptions extends RocksObject
 
   @Override
   public ColumnFamilyOptions setVerifyChecksumsInCompaction(
-      boolean verifyChecksumsInCompaction) {
+      final boolean verifyChecksumsInCompaction) {
     setVerifyChecksumsInCompaction(
         nativeHandle_, verifyChecksumsInCompaction);
     return this;
@@ -435,7 +445,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setFilterDeletes(boolean filterDeletes) {
+  public ColumnFamilyOptions setFilterDeletes(
+      final boolean filterDeletes) {
     setFilterDeletes(nativeHandle_, filterDeletes);
     return this;
   }
@@ -446,7 +457,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMaxSequentialSkipInIterations(long maxSequentialSkipInIterations) {
+  public ColumnFamilyOptions setMaxSequentialSkipInIterations(
+      final long maxSequentialSkipInIterations) {
     setMaxSequentialSkipInIterations(nativeHandle_, maxSequentialSkipInIterations);
     return this;
   }
@@ -457,8 +469,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMemTableConfig(MemTableConfig config)
+  public ColumnFamilyOptions setMemTableConfig(
-      throws RocksDBException {
+      final MemTableConfig config) throws RocksDBException {
     memTableConfig_ = config;
     setMemTableFactory(nativeHandle_, config.newMemTableFactoryHandle());
     return this;
@@ -471,7 +483,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setTableFormatConfig(TableFormatConfig config) {
+  public ColumnFamilyOptions setTableFormatConfig(
+      final TableFormatConfig config) {
     tableFormatConfig_ = config;
     setTableFactory(nativeHandle_, config.newTableFactoryHandle());
     return this;
@@ -484,7 +497,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setInplaceUpdateSupport(boolean inplaceUpdateSupport) {
+  public ColumnFamilyOptions setInplaceUpdateSupport(
+      final boolean inplaceUpdateSupport) {
     setInplaceUpdateSupport(nativeHandle_, inplaceUpdateSupport);
     return this;
   }
@@ -495,7 +509,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setInplaceUpdateNumLocks(long inplaceUpdateNumLocks)
+  public ColumnFamilyOptions setInplaceUpdateNumLocks(
+      final long inplaceUpdateNumLocks)
       throws RocksDBException {
     setInplaceUpdateNumLocks(nativeHandle_, inplaceUpdateNumLocks);
     return this;
@@ -507,7 +522,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMemtablePrefixBloomBits(int memtablePrefixBloomBits) {
+  public ColumnFamilyOptions setMemtablePrefixBloomBits(
+      final int memtablePrefixBloomBits) {
     setMemtablePrefixBloomBits(nativeHandle_, memtablePrefixBloomBits);
     return this;
   }
@@ -518,7 +534,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMemtablePrefixBloomProbes(int memtablePrefixBloomProbes) {
+  public ColumnFamilyOptions setMemtablePrefixBloomProbes(
+      final int memtablePrefixBloomProbes) {
     setMemtablePrefixBloomProbes(nativeHandle_, memtablePrefixBloomProbes);
     return this;
   }
@@ -540,8 +557,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMaxSuccessiveMerges(long maxSuccessiveMerges)
+  public ColumnFamilyOptions setMaxSuccessiveMerges(
-      throws RocksDBException {
+      final long maxSuccessiveMerges) throws RocksDBException {
     setMaxSuccessiveMerges(nativeHandle_, maxSuccessiveMerges);
     return this;
   }
@@ -552,7 +569,8 @@ public class ColumnFamilyOptions extends RocksObject
   }
 
   @Override
-  public ColumnFamilyOptions setMinPartialMergeOperands(int minPartialMergeOperands) {
+  public ColumnFamilyOptions setMinPartialMergeOperands(
+      final int minPartialMergeOperands) {
     setMinPartialMergeOperands(nativeHandle_, minPartialMergeOperands);
     return this;
   }
@@ -577,7 +595,7 @@ public class ColumnFamilyOptions extends RocksObject
    *
    * @param handle native handle to ColumnFamilyOptions instance.
    */
-  private ColumnFamilyOptions(long handle) {
+  private ColumnFamilyOptions(final long handle) {
     super();
     nativeHandle_ = handle;
   }

java/src/main/java/org/rocksdb/DBOptions.java

@@ -51,7 +51,7 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
    *     {@link java.util.Properties} instance is passed to the method call.
    */
   public static DBOptions getDBOptionsFromProps(
-      Properties properties) {
+      final Properties properties) {
     if (properties == null || properties.size() == 0) {
       throw new IllegalArgumentException(
           "Properties value must contain at least one value.");
@@ -73,14 +73,15 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setIncreaseParallelism(int totalThreads) {
+  public DBOptions setIncreaseParallelism(
+      final int totalThreads) {
     assert (isInitialized());
     setIncreaseParallelism(nativeHandle_, totalThreads);
     return this;
   }
 
   @Override
-  public DBOptions setCreateIfMissing(boolean flag) {
+  public DBOptions setCreateIfMissing(final boolean flag) {
     assert(isInitialized());
     setCreateIfMissing(nativeHandle_, flag);
     return this;
@@ -93,7 +94,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setCreateMissingColumnFamilies(boolean flag) {
+  public DBOptions setCreateMissingColumnFamilies(
+      final boolean flag) {
     assert(isInitialized());
     setCreateMissingColumnFamilies(nativeHandle_, flag);
     return this;
@@ -106,7 +108,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setErrorIfExists(boolean errorIfExists) {
+  public DBOptions setErrorIfExists(
+      final boolean errorIfExists) {
     assert(isInitialized());
     setErrorIfExists(nativeHandle_, errorIfExists);
     return this;
@@ -119,7 +122,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setParanoidChecks(boolean paranoidChecks) {
+  public DBOptions setParanoidChecks(
+      final boolean paranoidChecks) {
     assert(isInitialized());
     setParanoidChecks(nativeHandle_, paranoidChecks);
     return this;
@@ -132,7 +136,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setRateLimiterConfig(RateLimiterConfig config) {
+  public DBOptions setRateLimiterConfig(
+      final RateLimiterConfig config) {
     assert(isInitialized());
     rateLimiterConfig_ = config;
     setRateLimiter(nativeHandle_, config.newRateLimiterHandle());
@@ -140,7 +145,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setInfoLogLevel(InfoLogLevel infoLogLevel) {
+  public DBOptions setInfoLogLevel(
+      final InfoLogLevel infoLogLevel) {
     assert(isInitialized());
     setInfoLogLevel(nativeHandle_, infoLogLevel.getValue());
     return this;
@@ -154,7 +160,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxOpenFiles(int maxOpenFiles) {
+  public DBOptions setMaxOpenFiles(
+      final int maxOpenFiles) {
     assert(isInitialized());
     setMaxOpenFiles(nativeHandle_, maxOpenFiles);
     return this;
@@ -167,7 +174,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxTotalWalSize(long maxTotalWalSize) {
+  public DBOptions setMaxTotalWalSize(
+      final long maxTotalWalSize) {
     assert(isInitialized());
     setMaxTotalWalSize(nativeHandle_, maxTotalWalSize);
     return this;
@@ -200,7 +208,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setDisableDataSync(boolean disableDataSync) {
+  public DBOptions setDisableDataSync(
+      final boolean disableDataSync) {
     assert(isInitialized());
     setDisableDataSync(nativeHandle_, disableDataSync);
     return this;
@@ -213,7 +222,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setUseFsync(boolean useFsync) {
+  public DBOptions setUseFsync(
+      final boolean useFsync) {
     assert(isInitialized());
     setUseFsync(nativeHandle_, useFsync);
     return this;
@@ -226,7 +236,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setDbLogDir(String dbLogDir) {
+  public DBOptions setDbLogDir(
+      final String dbLogDir) {
     assert(isInitialized());
     setDbLogDir(nativeHandle_, dbLogDir);
     return this;
@@ -239,7 +250,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setWalDir(String walDir) {
+  public DBOptions setWalDir(
+      final String walDir) {
     assert(isInitialized());
     setWalDir(nativeHandle_, walDir);
     return this;
@@ -252,7 +264,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setDeleteObsoleteFilesPeriodMicros(long micros) {
+  public DBOptions setDeleteObsoleteFilesPeriodMicros(
+      final long micros) {
     assert(isInitialized());
     setDeleteObsoleteFilesPeriodMicros(nativeHandle_, micros);
     return this;
@@ -265,7 +278,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxBackgroundCompactions(int maxBackgroundCompactions) {
+  public DBOptions setMaxBackgroundCompactions(
+      final int maxBackgroundCompactions) {
     assert(isInitialized());
     setMaxBackgroundCompactions(nativeHandle_, maxBackgroundCompactions);
     return this;
@@ -278,7 +292,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxBackgroundFlushes(int maxBackgroundFlushes) {
+  public DBOptions setMaxBackgroundFlushes(
+      final int maxBackgroundFlushes) {
     assert(isInitialized());
     setMaxBackgroundFlushes(nativeHandle_, maxBackgroundFlushes);
     return this;
@@ -291,8 +306,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxLogFileSize(long maxLogFileSize)
+  public DBOptions setMaxLogFileSize(
-      throws RocksDBException {
+      final long maxLogFileSize) throws RocksDBException {
     assert(isInitialized());
     setMaxLogFileSize(nativeHandle_, maxLogFileSize);
     return this;
@@ -305,8 +320,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setLogFileTimeToRoll(long logFileTimeToRoll)
+  public DBOptions setLogFileTimeToRoll(
-      throws RocksDBException{
+      final long logFileTimeToRoll) throws RocksDBException{
     assert(isInitialized());
     setLogFileTimeToRoll(nativeHandle_, logFileTimeToRoll);
     return this;
@@ -319,8 +334,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setKeepLogFileNum(long keepLogFileNum)
+  public DBOptions setKeepLogFileNum(
-      throws RocksDBException{
+      final long keepLogFileNum) throws RocksDBException{
     assert(isInitialized());
     setKeepLogFileNum(nativeHandle_, keepLogFileNum);
     return this;
@@ -333,7 +348,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setMaxManifestFileSize(long maxManifestFileSize) {
+  public DBOptions setMaxManifestFileSize(
+      final long maxManifestFileSize) {
     assert(isInitialized());
     setMaxManifestFileSize(nativeHandle_, maxManifestFileSize);
     return this;
@@ -346,7 +362,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setTableCacheNumshardbits(int tableCacheNumshardbits) {
+  public DBOptions setTableCacheNumshardbits(
+      final int tableCacheNumshardbits) {
     assert(isInitialized());
     setTableCacheNumshardbits(nativeHandle_, tableCacheNumshardbits);
     return this;
@@ -359,7 +376,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setTableCacheRemoveScanCountLimit(int limit) {
+  public DBOptions setTableCacheRemoveScanCountLimit(
+      final int limit) {
     assert(isInitialized());
     setTableCacheRemoveScanCountLimit(nativeHandle_, limit);
     return this;
@@ -372,7 +390,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setWalTtlSeconds(long walTtlSeconds) {
+  public DBOptions setWalTtlSeconds(
+      final long walTtlSeconds) {
     assert(isInitialized());
     setWalTtlSeconds(nativeHandle_, walTtlSeconds);
     return this;
@@ -385,7 +404,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setWalSizeLimitMB(long sizeLimitMB) {
+  public DBOptions setWalSizeLimitMB(
+      final long sizeLimitMB) {
     assert(isInitialized());
     setWalSizeLimitMB(nativeHandle_, sizeLimitMB);
     return this;
@@ -398,8 +418,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setManifestPreallocationSize(long size)
+  public DBOptions setManifestPreallocationSize(
-      throws RocksDBException {
+      final long size) throws RocksDBException {
     assert(isInitialized());
     setManifestPreallocationSize(nativeHandle_, size);
     return this;
@@ -412,7 +432,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setAllowOsBuffer(boolean allowOsBuffer) {
+  public DBOptions setAllowOsBuffer(
+      final boolean allowOsBuffer) {
     assert(isInitialized());
     setAllowOsBuffer(nativeHandle_, allowOsBuffer);
     return this;
@@ -425,7 +446,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setAllowMmapReads(boolean allowMmapReads) {
+  public DBOptions setAllowMmapReads(
+      final boolean allowMmapReads) {
     assert(isInitialized());
     setAllowMmapReads(nativeHandle_, allowMmapReads);
     return this;
@@ -438,7 +460,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setAllowMmapWrites(boolean allowMmapWrites) {
+  public DBOptions setAllowMmapWrites(
+      final boolean allowMmapWrites) {
     assert(isInitialized());
     setAllowMmapWrites(nativeHandle_, allowMmapWrites);
     return this;
@@ -451,7 +474,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setIsFdCloseOnExec(boolean isFdCloseOnExec) {
+  public DBOptions setIsFdCloseOnExec(
+      final boolean isFdCloseOnExec) {
     assert(isInitialized());
     setIsFdCloseOnExec(nativeHandle_, isFdCloseOnExec);
     return this;
@@ -465,7 +489,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
 
   @Override
   @Deprecated
-  public DBOptions setSkipLogErrorOnRecovery(boolean skip) {
+  public DBOptions setSkipLogErrorOnRecovery(
+      final boolean skip) {
     assert(isInitialized());
     setSkipLogErrorOnRecovery(nativeHandle_, skip);
     return this;
@@ -479,7 +504,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setStatsDumpPeriodSec(int statsDumpPeriodSec) {
+  public DBOptions setStatsDumpPeriodSec(
+      final int statsDumpPeriodSec) {
     assert(isInitialized());
     setStatsDumpPeriodSec(nativeHandle_, statsDumpPeriodSec);
     return this;
@@ -492,7 +518,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setAdviseRandomOnOpen(boolean adviseRandomOnOpen) {
+  public DBOptions setAdviseRandomOnOpen(
+      final boolean adviseRandomOnOpen) {
     assert(isInitialized());
     setAdviseRandomOnOpen(nativeHandle_, adviseRandomOnOpen);
     return this;
@@ -504,7 +531,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setUseAdaptiveMutex(boolean useAdaptiveMutex) {
+  public DBOptions setUseAdaptiveMutex(
+      final boolean useAdaptiveMutex) {
     assert(isInitialized());
     setUseAdaptiveMutex(nativeHandle_, useAdaptiveMutex);
     return this;
@@ -517,7 +545,8 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
   }
 
   @Override
-  public DBOptions setBytesPerSync(long bytesPerSync) {
+  public DBOptions setBytesPerSync(
+      final long bytesPerSync) {
     assert(isInitialized());
     setBytesPerSync(nativeHandle_, bytesPerSync);
     return this;
@@ -545,7 +574,7 @@ public class DBOptions extends RocksObject implements DBOptionsInterface {
    *
    * @param handle native handle to DBOptions instance.
    */
-  private DBOptions(long handle) {
+  private DBOptions(final long handle) {
     super();
     nativeHandle_ = handle;
   }

java/src/main/java/org/rocksdb/FlushOptions.java

@@ -22,7 +22,7 @@ public class FlushOptions extends RocksObject {
    *
    * @return instance of current FlushOptions.
    */
-  public FlushOptions setWaitForFlush(boolean waitForFlush) {
+  public FlushOptions setWaitForFlush(final boolean waitForFlush) {
     assert(isInitialized());
     setWaitForFlush(nativeHandle_, waitForFlush);
     return this;

java/src/main/java/org/rocksdb/GenericRateLimiterConfig.java

@@ -34,8 +34,8 @@ public class GenericRateLimiterConfig extends RateLimiterConfig {
    *     fairness chance even though high-pri requests exist to avoid starvation.
    *     You should be good by leaving it at default 10.
    */
-  public GenericRateLimiterConfig(long rateBytesPerSecond,
+  public GenericRateLimiterConfig(final long rateBytesPerSecond,
-      long refillPeriodMicros, int fairness) {
+      final long refillPeriodMicros, final int fairness) {
     rateBytesPerSecond_ = rateBytesPerSecond;
     refillPeriodMicros_ = refillPeriodMicros;
     fairness_ = fairness;
@@ -49,7 +49,7 @@ public class GenericRateLimiterConfig extends RateLimiterConfig {
    *     and flush in bytes per second. Currently, RocksDB does not enforce
    *     rate limit for anything other than flush and compaction, e.g. write to WAL.
    */
-  public GenericRateLimiterConfig(long rateBytesPerSecond) {
+  public GenericRateLimiterConfig(final long rateBytesPerSecond) {
     this(rateBytesPerSecond, DEFAULT_REFILL_PERIOD_MICROS, DEFAULT_FAIRNESS);
   }
 

java/src/main/java/org/rocksdb/HashLinkedListMemTableConfig.java

@@ -39,7 +39,8 @@ public class HashLinkedListMemTableConfig extends MemTableConfig {
    * @param count the number of hash buckets.
    * @return the reference to the current HashLinkedListMemTableConfig.
    */
-  public HashLinkedListMemTableConfig setBucketCount(long count) {
+  public HashLinkedListMemTableConfig setBucketCount(
+      final long count) {
     bucketCount_ = count;
     return this;
   }
@@ -66,7 +67,8 @@ public class HashLinkedListMemTableConfig extends MemTableConfig {
    * @param size if set to {@code <= 0} hashtable bytes from malloc
    * @return the reference to the current HashLinkedListMemTableConfig.
    */
-  public HashLinkedListMemTableConfig setHugePageTlbSize(long size) {
+  public HashLinkedListMemTableConfig setHugePageTlbSize(
+      final long size) {
     hugePageTlbSize_ = size;
     return this;
   }
@@ -89,7 +91,7 @@ public class HashLinkedListMemTableConfig extends MemTableConfig {
    * @return the reference to the current HashLinkedListMemTableConfig.
    */
   public HashLinkedListMemTableConfig
-      setBucketEntriesLoggingThreshold(int threshold) {
+      setBucketEntriesLoggingThreshold(final int threshold) {
     bucketEntriesLoggingThreshold_ = threshold;
     return this;
   }
@@ -113,7 +115,7 @@ public class HashLinkedListMemTableConfig extends MemTableConfig {
    * @return the reference to the current HashLinkedListMemTableConfig.
    */
   public HashLinkedListMemTableConfig
-      setIfLogBucketDistWhenFlush(boolean logDistribution) {
+      setIfLogBucketDistWhenFlush(final boolean logDistribution) {
     ifLogBucketDistWhenFlush_ = logDistribution;
     return this;
   }
@@ -137,7 +139,7 @@ public class HashLinkedListMemTableConfig extends MemTableConfig {
    * @return the reference to the current HashLinkedListMemTableConfig.
    */
   public HashLinkedListMemTableConfig
-      setThresholdUseSkiplist(int threshold) {
+      setThresholdUseSkiplist(final int threshold) {
     thresholdUseSkiplist_ = threshold;
     return this;
   }

java/src/main/java/org/rocksdb/HashSkipListMemTableConfig.java

@@ -35,7 +35,8 @@ public class HashSkipListMemTableConfig extends MemTableConfig {
    *    skiplist memtable.
    * @return the reference to the current HashSkipListMemTableConfig.
    */
-  public HashSkipListMemTableConfig setBucketCount(long count) {
+  public HashSkipListMemTableConfig setBucketCount(
+      final long count) {
     bucketCount_ = count;
     return this;
   }
@@ -54,7 +55,7 @@ public class HashSkipListMemTableConfig extends MemTableConfig {
    *
    * @return the reference to the current HashSkipListMemTableConfig.
    */
-  public HashSkipListMemTableConfig setHeight(int height) {
+  public HashSkipListMemTableConfig setHeight(final int height) {
     height_ = height;
     return this;
   }
@@ -75,7 +76,8 @@ public class HashSkipListMemTableConfig extends MemTableConfig {
    *     lists in the skip list.
    * @return the reference to the current HashSkipListMemTableConfig.
    */
-  public HashSkipListMemTableConfig setBranchingFactor(int bf) {
+  public HashSkipListMemTableConfig setBranchingFactor(
+      final int bf) {
     branchingFactor_ = bf;
     return this;
   }

java/src/main/java/org/rocksdb/HistogramData.java

@@ -12,8 +12,9 @@ public class HistogramData {
   private final double average_;
   private final double standardDeviation_;
 
-  public HistogramData(double median, double percentile95,
+  public HistogramData(final double median, final double percentile95,
-      double percentile99, double average, double standardDeviation) {
+      final double percentile99, final double average,
+      final double standardDeviation) {
     median_ = median;
     percentile95_ = percentile95;
     percentile99_ = percentile99;

java/src/main/java/org/rocksdb/Options.java

@@ -37,28 +37,29 @@ public class Options extends RocksObject
    * @param columnFamilyOptions {@link org.rocksdb.ColumnFamilyOptions}
    *     instance
    */
-  public Options(DBOptions dbOptions, ColumnFamilyOptions columnFamilyOptions) {
+  public Options(final DBOptions dbOptions,
+      final ColumnFamilyOptions columnFamilyOptions) {
     super();
     newOptions(dbOptions.nativeHandle_, columnFamilyOptions.nativeHandle_);
     env_ = RocksEnv.getDefault();
   }
 
   @Override
-  public Options setIncreaseParallelism(int totalThreads) {
+  public Options setIncreaseParallelism(final int totalThreads) {
     assert(isInitialized());
     setIncreaseParallelism(nativeHandle_, totalThreads);
     return this;
   }
 
   @Override
-  public Options setCreateIfMissing(boolean flag) {
+  public Options setCreateIfMissing(final boolean flag) {
     assert(isInitialized());
     setCreateIfMissing(nativeHandle_, flag);
     return this;
   }
 
   @Override
-  public Options setCreateMissingColumnFamilies(boolean flag) {
+  public Options setCreateMissingColumnFamilies(final boolean flag) {
     assert(isInitialized());
     setCreateMissingColumnFamilies(nativeHandle_, flag);
     return this;
@@ -72,7 +73,7 @@ public class Options extends RocksObject
    * @param env {@link RocksEnv} instance.
    * @return the instance of the current Options.
    */
-  public Options setEnv(RocksEnv env) {
+  public Options setEnv(final RocksEnv env) {
     assert(isInitialized());
     setEnv(nativeHandle_, env.nativeHandle_);
     env_ = env;
@@ -149,14 +150,14 @@ public class Options extends RocksObject
 
   @Override
   public Options optimizeUniversalStyleCompaction(
-      long memtableMemoryBudget) {
+      final long memtableMemoryBudget) {
     optimizeUniversalStyleCompaction(nativeHandle_,
         memtableMemoryBudget);
     return this;
   }
 
   @Override
-  public Options setComparator(BuiltinComparator builtinComparator) {
+  public Options setComparator(final BuiltinComparator builtinComparator) {
     assert(isInitialized());
     setComparatorHandle(nativeHandle_, builtinComparator.ordinal());
     return this;
@@ -164,7 +165,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setComparator(
-      AbstractComparator<? extends AbstractSlice<?>> comparator) {
+      final AbstractComparator<? extends AbstractSlice<?>> comparator) {
     assert (isInitialized());
     setComparatorHandle(nativeHandle_, comparator.nativeHandle_);
     comparator_ = comparator;
@@ -172,7 +173,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMergeOperatorName(String name) {
+  public Options setMergeOperatorName(final String name) {
     assert (isInitialized());
     if (name == null) {
       throw new IllegalArgumentException(
@@ -183,13 +184,13 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMergeOperator(MergeOperator mergeOperator) {
+  public Options setMergeOperator(final MergeOperator mergeOperator) {
     setMergeOperator(nativeHandle_, mergeOperator.newMergeOperatorHandle());
     return this;
   }
 
   @Override
-  public Options setWriteBufferSize(long writeBufferSize)
+  public Options setWriteBufferSize(final long writeBufferSize)
       throws RocksDBException {
     assert(isInitialized());
     setWriteBufferSize(nativeHandle_, writeBufferSize);
@@ -203,7 +204,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxWriteBufferNumber(int maxWriteBufferNumber) {
+  public Options setMaxWriteBufferNumber(final int maxWriteBufferNumber) {
     assert(isInitialized());
     setMaxWriteBufferNumber(nativeHandle_, maxWriteBufferNumber);
     return this;
@@ -222,7 +223,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setErrorIfExists(boolean errorIfExists) {
+  public Options setErrorIfExists(final boolean errorIfExists) {
     assert(isInitialized());
     setErrorIfExists(nativeHandle_, errorIfExists);
     return this;
@@ -235,7 +236,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setParanoidChecks(boolean paranoidChecks) {
+  public Options setParanoidChecks(final boolean paranoidChecks) {
     assert(isInitialized());
     setParanoidChecks(nativeHandle_, paranoidChecks);
     return this;
@@ -248,7 +249,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxTotalWalSize(long maxTotalWalSize) {
+  public Options setMaxTotalWalSize(final long maxTotalWalSize) {
     assert(isInitialized());
     setMaxTotalWalSize(nativeHandle_, maxTotalWalSize);
     return this;
@@ -261,7 +262,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxOpenFiles(int maxOpenFiles) {
+  public Options setMaxOpenFiles(final int maxOpenFiles) {
     assert(isInitialized());
     setMaxOpenFiles(nativeHandle_, maxOpenFiles);
     return this;
@@ -274,7 +275,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setDisableDataSync(boolean disableDataSync) {
+  public Options setDisableDataSync(final boolean disableDataSync) {
     assert(isInitialized());
     setDisableDataSync(nativeHandle_, disableDataSync);
     return this;
@@ -287,7 +288,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setUseFsync(boolean useFsync) {
+  public Options setUseFsync(final boolean useFsync) {
     assert(isInitialized());
     setUseFsync(nativeHandle_, useFsync);
     return this;
@@ -300,7 +301,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setDbLogDir(String dbLogDir) {
+  public Options setDbLogDir(final String dbLogDir) {
     assert(isInitialized());
     setDbLogDir(nativeHandle_, dbLogDir);
     return this;
@@ -313,7 +314,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setWalDir(String walDir) {
+  public Options setWalDir(final String walDir) {
     assert(isInitialized());
     setWalDir(nativeHandle_, walDir);
     return this;
@@ -326,7 +327,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setDeleteObsoleteFilesPeriodMicros(long micros) {
+  public Options setDeleteObsoleteFilesPeriodMicros(
+      final long micros) {
     assert(isInitialized());
     setDeleteObsoleteFilesPeriodMicros(nativeHandle_, micros);
     return this;
@@ -359,7 +361,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxBackgroundCompactions(int maxBackgroundCompactions) {
+  public Options setMaxBackgroundCompactions(
+      final int maxBackgroundCompactions) {
     assert(isInitialized());
     setMaxBackgroundCompactions(nativeHandle_, maxBackgroundCompactions);
     return this;
@@ -372,7 +375,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxBackgroundFlushes(int maxBackgroundFlushes) {
+  public Options setMaxBackgroundFlushes(
+      final int maxBackgroundFlushes) {
     assert(isInitialized());
     setMaxBackgroundFlushes(nativeHandle_, maxBackgroundFlushes);
     return this;
@@ -385,7 +389,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxLogFileSize(long maxLogFileSize)
+  public Options setMaxLogFileSize(final long maxLogFileSize)
       throws RocksDBException {
     assert(isInitialized());
     setMaxLogFileSize(nativeHandle_, maxLogFileSize);
@@ -399,7 +403,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setLogFileTimeToRoll(long logFileTimeToRoll)
+  public Options setLogFileTimeToRoll(final long logFileTimeToRoll)
       throws RocksDBException{
     assert(isInitialized());
     setLogFileTimeToRoll(nativeHandle_, logFileTimeToRoll);
@@ -413,7 +417,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setKeepLogFileNum(long keepLogFileNum)
+  public Options setKeepLogFileNum(final long keepLogFileNum)
       throws RocksDBException{
     assert(isInitialized());
     setKeepLogFileNum(nativeHandle_, keepLogFileNum);
@@ -427,7 +431,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxManifestFileSize(long maxManifestFileSize) {
+  public Options setMaxManifestFileSize(
+      final long maxManifestFileSize) {
     assert(isInitialized());
     setMaxManifestFileSize(nativeHandle_, maxManifestFileSize);
     return this;
@@ -440,7 +445,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setTableCacheNumshardbits(int tableCacheNumshardbits) {
+  public Options setTableCacheNumshardbits(
+      final int tableCacheNumshardbits) {
     assert(isInitialized());
     setTableCacheNumshardbits(nativeHandle_, tableCacheNumshardbits);
     return this;
@@ -453,7 +459,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setTableCacheRemoveScanCountLimit(int limit) {
+  public Options setTableCacheRemoveScanCountLimit(
+      final int limit) {
     assert(isInitialized());
     setTableCacheRemoveScanCountLimit(nativeHandle_, limit);
     return this;
@@ -466,7 +473,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setWalTtlSeconds(long walTtlSeconds) {
+  public Options setWalTtlSeconds(final long walTtlSeconds) {
     assert(isInitialized());
     setWalTtlSeconds(nativeHandle_, walTtlSeconds);
     return this;
@@ -479,7 +486,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setWalSizeLimitMB(long sizeLimitMB) {
+  public Options setWalSizeLimitMB(final long sizeLimitMB) {
     assert(isInitialized());
     setWalSizeLimitMB(nativeHandle_, sizeLimitMB);
     return this;
@@ -492,7 +499,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setManifestPreallocationSize(long size)
+  public Options setManifestPreallocationSize(final long size)
       throws RocksDBException {
     assert(isInitialized());
     setManifestPreallocationSize(nativeHandle_, size);
@@ -506,7 +513,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setAllowOsBuffer(boolean allowOsBuffer) {
+  public Options setAllowOsBuffer(final boolean allowOsBuffer) {
     assert(isInitialized());
     setAllowOsBuffer(nativeHandle_, allowOsBuffer);
     return this;
@@ -519,7 +526,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setAllowMmapReads(boolean allowMmapReads) {
+  public Options setAllowMmapReads(final boolean allowMmapReads) {
     assert(isInitialized());
     setAllowMmapReads(nativeHandle_, allowMmapReads);
     return this;
@@ -532,7 +539,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setAllowMmapWrites(boolean allowMmapWrites) {
+  public Options setAllowMmapWrites(final boolean allowMmapWrites) {
     assert(isInitialized());
     setAllowMmapWrites(nativeHandle_, allowMmapWrites);
     return this;
@@ -545,7 +552,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setIsFdCloseOnExec(boolean isFdCloseOnExec) {
+  public Options setIsFdCloseOnExec(final boolean isFdCloseOnExec) {
     assert(isInitialized());
     setIsFdCloseOnExec(nativeHandle_, isFdCloseOnExec);
     return this;
@@ -560,7 +567,7 @@ public class Options extends RocksObject
 
   @Override
   @Deprecated
-  public Options setSkipLogErrorOnRecovery(boolean skip) {
+  public Options setSkipLogErrorOnRecovery(final boolean skip) {
     assert(isInitialized());
     setSkipLogErrorOnRecovery(nativeHandle_, skip);
     return this;
@@ -573,7 +580,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setStatsDumpPeriodSec(int statsDumpPeriodSec) {
+  public Options setStatsDumpPeriodSec(final int statsDumpPeriodSec) {
     assert(isInitialized());
     setStatsDumpPeriodSec(nativeHandle_, statsDumpPeriodSec);
     return this;
@@ -585,7 +592,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setAdviseRandomOnOpen(boolean adviseRandomOnOpen) {
+  public Options setAdviseRandomOnOpen(final boolean adviseRandomOnOpen) {
     assert(isInitialized());
     setAdviseRandomOnOpen(nativeHandle_, adviseRandomOnOpen);
     return this;
@@ -598,7 +605,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setUseAdaptiveMutex(boolean useAdaptiveMutex) {
+  public Options setUseAdaptiveMutex(final boolean useAdaptiveMutex) {
     assert(isInitialized());
     setUseAdaptiveMutex(nativeHandle_, useAdaptiveMutex);
     return this;
@@ -610,14 +617,14 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setBytesPerSync(long bytesPerSync) {
+  public Options setBytesPerSync(final long bytesPerSync) {
     assert(isInitialized());
     setBytesPerSync(nativeHandle_, bytesPerSync);
     return this;
   }
 
   @Override
-  public Options setMemTableConfig(MemTableConfig config)
+  public Options setMemTableConfig(final MemTableConfig config)
       throws RocksDBException {
     memTableConfig_ = config;
     setMemTableFactory(nativeHandle_, config.newMemTableFactoryHandle());
@@ -625,14 +632,14 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setRateLimiterConfig(RateLimiterConfig config) {
+  public Options setRateLimiterConfig(final RateLimiterConfig config) {
     rateLimiterConfig_ = config;
     setRateLimiter(nativeHandle_, config.newRateLimiterHandle());
     return this;
   }
 
   @Override
-  public Options setInfoLogLevel(InfoLogLevel infoLogLevel) {
+  public Options setInfoLogLevel(final InfoLogLevel infoLogLevel) {
     assert(isInitialized());
     setInfoLogLevel(nativeHandle_, infoLogLevel.getValue());
     return this;
@@ -652,7 +659,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setTableFormatConfig(TableFormatConfig config) {
+  public Options setTableFormatConfig(final TableFormatConfig config) {
     tableFormatConfig_ = config;
     setTableFactory(nativeHandle_, config.newTableFactoryHandle());
     return this;
@@ -665,7 +672,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options useFixedLengthPrefixExtractor(int n) {
+  public Options useFixedLengthPrefixExtractor(final int n) {
     assert(isInitialized());
     useFixedLengthPrefixExtractor(nativeHandle_, n);
     return this;
@@ -688,7 +695,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setCompactionStyle(CompactionStyle compactionStyle) {
+  public Options setCompactionStyle(
+      final CompactionStyle compactionStyle) {
     setCompactionStyle(nativeHandle_, compactionStyle.getValue());
     return this;
   }
@@ -711,7 +719,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setLevelZeroFileNumCompactionTrigger(
-      int numFiles) {
+      final int numFiles) {
     setLevelZeroFileNumCompactionTrigger(
         nativeHandle_, numFiles);
     return this;
@@ -724,7 +732,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setLevelZeroSlowdownWritesTrigger(
-      int numFiles) {
+      final int numFiles) {
     setLevelZeroSlowdownWritesTrigger(nativeHandle_, numFiles);
     return this;
   }
@@ -735,7 +743,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setLevelZeroStopWritesTrigger(int numFiles) {
+  public Options setLevelZeroStopWritesTrigger(
+      final int numFiles) {
     setLevelZeroStopWritesTrigger(nativeHandle_, numFiles);
     return this;
   }
@@ -746,7 +755,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxMemCompactionLevel(int maxMemCompactionLevel) {
+  public Options setMaxMemCompactionLevel(
+      final int maxMemCompactionLevel) {
     setMaxMemCompactionLevel(nativeHandle_, maxMemCompactionLevel);
     return this;
   }
@@ -779,7 +789,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxBytesForLevelBase(long maxBytesForLevelBase) {
+  public Options setMaxBytesForLevelBase(final long maxBytesForLevelBase) {
     setMaxBytesForLevelBase(nativeHandle_, maxBytesForLevelBase);
     return this;
   }
@@ -790,7 +800,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxBytesForLevelMultiplier(int multiplier) {
+  public Options setMaxBytesForLevelMultiplier(final int multiplier) {
     setMaxBytesForLevelMultiplier(nativeHandle_, multiplier);
     return this;
   }
@@ -801,7 +811,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setExpandedCompactionFactor(int expandedCompactionFactor) {
+  public Options setExpandedCompactionFactor(
+      final int expandedCompactionFactor) {
     setExpandedCompactionFactor(nativeHandle_, expandedCompactionFactor);
     return this;
   }
@@ -824,7 +835,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setMaxGrandparentOverlapFactor(
-      int maxGrandparentOverlapFactor) {
+      final int maxGrandparentOverlapFactor) {
     setMaxGrandparentOverlapFactor(nativeHandle_, maxGrandparentOverlapFactor);
     return this;
   }
@@ -835,7 +846,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setSoftRateLimit(double softRateLimit) {
+  public Options setSoftRateLimit(final double softRateLimit) {
     setSoftRateLimit(nativeHandle_, softRateLimit);
     return this;
   }
@@ -858,7 +869,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setRateLimitDelayMaxMilliseconds(
-      int rateLimitDelayMaxMilliseconds) {
+      final int rateLimitDelayMaxMilliseconds) {
     setRateLimitDelayMaxMilliseconds(
         nativeHandle_, rateLimitDelayMaxMilliseconds);
     return this;
@@ -870,7 +881,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setArenaBlockSize(long arenaBlockSize)
+  public Options setArenaBlockSize(final long arenaBlockSize)
       throws RocksDBException {
     setArenaBlockSize(nativeHandle_, arenaBlockSize);
     return this;
@@ -882,7 +893,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setDisableAutoCompactions(boolean disableAutoCompactions) {
+  public Options setDisableAutoCompactions(
+      final boolean disableAutoCompactions) {
     setDisableAutoCompactions(nativeHandle_, disableAutoCompactions);
     return this;
   }
@@ -894,7 +906,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setPurgeRedundantKvsWhileFlush(
-      boolean purgeRedundantKvsWhileFlush) {
+      final boolean purgeRedundantKvsWhileFlush) {
     setPurgeRedundantKvsWhileFlush(
         nativeHandle_, purgeRedundantKvsWhileFlush);
     return this;
@@ -907,7 +919,7 @@ public class Options extends RocksObject
 
   @Override
   public Options setVerifyChecksumsInCompaction(
-      boolean verifyChecksumsInCompaction) {
+      final boolean verifyChecksumsInCompaction) {
     setVerifyChecksumsInCompaction(
         nativeHandle_, verifyChecksumsInCompaction);
     return this;
@@ -919,7 +931,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setFilterDeletes(boolean filterDeletes) {
+  public Options setFilterDeletes(
+      final boolean filterDeletes) {
     setFilterDeletes(nativeHandle_, filterDeletes);
     return this;
   }
@@ -930,7 +943,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMaxSequentialSkipInIterations(long maxSequentialSkipInIterations) {
+  public Options setMaxSequentialSkipInIterations(
+      final long maxSequentialSkipInIterations) {
     setMaxSequentialSkipInIterations(nativeHandle_, maxSequentialSkipInIterations);
     return this;
   }
@@ -941,7 +955,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setInplaceUpdateSupport(boolean inplaceUpdateSupport) {
+  public Options setInplaceUpdateSupport(
+      final boolean inplaceUpdateSupport) {
     setInplaceUpdateSupport(nativeHandle_, inplaceUpdateSupport);
     return this;
   }
@@ -952,8 +967,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setInplaceUpdateNumLocks(long inplaceUpdateNumLocks)
+  public Options setInplaceUpdateNumLocks(
-      throws RocksDBException {
+      final long inplaceUpdateNumLocks) throws RocksDBException {
     setInplaceUpdateNumLocks(nativeHandle_, inplaceUpdateNumLocks);
     return this;
   }
@@ -964,7 +979,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMemtablePrefixBloomBits(int memtablePrefixBloomBits) {
+  public Options setMemtablePrefixBloomBits(
+      final int memtablePrefixBloomBits) {
     setMemtablePrefixBloomBits(nativeHandle_, memtablePrefixBloomBits);
     return this;
   }
@@ -975,7 +991,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMemtablePrefixBloomProbes(int memtablePrefixBloomProbes) {
+  public Options setMemtablePrefixBloomProbes(
+      final int memtablePrefixBloomProbes) {
     setMemtablePrefixBloomProbes(nativeHandle_, memtablePrefixBloomProbes);
     return this;
   }
@@ -986,7 +1003,7 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setBloomLocality(int bloomLocality) {
+  public Options setBloomLocality(final int bloomLocality) {
     setBloomLocality(nativeHandle_, bloomLocality);
     return this;
   }
@@ -1009,7 +1026,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMinWriteBufferNumberToMerge(int minWriteBufferNumberToMerge) {
+  public Options setMinWriteBufferNumberToMerge(
+      final int minWriteBufferNumberToMerge) {
     setMinWriteBufferNumberToMerge(nativeHandle_, minWriteBufferNumberToMerge);
     return this;
   }
@@ -1020,7 +1038,8 @@ public class Options extends RocksObject
   }
 
   @Override
-  public Options setMinPartialMergeOperands(int minPartialMergeOperands) {
+  public Options setMinPartialMergeOperands(
+      final int minPartialMergeOperands) {
     setMinPartialMergeOperands(nativeHandle_, minPartialMergeOperands);
     return this;
   }

java/src/main/java/org/rocksdb/ReadOptions.java

@@ -40,7 +40,8 @@ public class ReadOptions extends RocksObject {
    *     will be performed on every read.
    * @return the reference to the current ReadOptions.
    */
-  public ReadOptions setVerifyChecksums(boolean verifyChecksums) {
+  public ReadOptions setVerifyChecksums(
+      final boolean verifyChecksums) {
     assert(isInitialized());
     setVerifyChecksums(nativeHandle_, verifyChecksums);
     return this;
@@ -72,7 +73,7 @@ public class ReadOptions extends RocksObject {
    *     performed.
    * @return the reference to the current ReadOptions.
    */
-  public ReadOptions setFillCache(boolean fillCache) {
+  public ReadOptions setFillCache(final boolean fillCache) {
     assert(isInitialized());
     setFillCache(nativeHandle_, fillCache);
     return this;
@@ -90,7 +91,7 @@ public class ReadOptions extends RocksObject {
    * @param snapshot {@link Snapshot} instance
    * @return the reference to the current ReadOptions.
    */
-  public ReadOptions setSnapshot(Snapshot snapshot) {
+  public ReadOptions setSnapshot(final Snapshot snapshot) {
     assert(isInitialized());
     if (snapshot != null) {
       setSnapshot(nativeHandle_, snapshot.nativeHandle_);
@@ -145,7 +146,7 @@ public class ReadOptions extends RocksObject {
    * @param tailing if true, then tailing iterator will be enabled.
    * @return the reference to the current ReadOptions.
    */
-  public ReadOptions setTailing(boolean tailing) {
+  public ReadOptions setTailing(final boolean tailing) {
     assert(isInitialized());
     setTailing(nativeHandle_, tailing);
     return this;

java/src/main/java/org/rocksdb/RestoreBackupableDB.java

@@ -22,7 +22,7 @@ public class RestoreBackupableDB extends RocksObject {
    *
    * @param options {@link org.rocksdb.BackupableDBOptions} instance
    */
-  public RestoreBackupableDB(BackupableDBOptions options) {
+  public RestoreBackupableDB(final BackupableDBOptions options) {
     super();
     nativeHandle_ = newRestoreBackupableDB(options.nativeHandle_);
   }
@@ -49,8 +49,9 @@ public class RestoreBackupableDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void restoreDBFromBackup(long backupId, String dbDir, String walDir,
+  public void restoreDBFromBackup(final long backupId, final String dbDir,
-      RestoreOptions restoreOptions) throws RocksDBException {
+      final String walDir, final RestoreOptions restoreOptions)
+      throws RocksDBException {
     assert(isInitialized());
     restoreDBFromBackup0(nativeHandle_, backupId, dbDir, walDir,
         restoreOptions.nativeHandle_);
@@ -66,8 +67,9 @@ public class RestoreBackupableDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void restoreDBFromLatestBackup(String dbDir, String walDir,
+  public void restoreDBFromLatestBackup(final String dbDir,
-      RestoreOptions restoreOptions) throws RocksDBException {
+      final String walDir, final RestoreOptions restoreOptions)
+      throws RocksDBException {
     assert(isInitialized());
     restoreDBFromLatestBackup0(nativeHandle_, dbDir, walDir,
         restoreOptions.nativeHandle_);
@@ -81,7 +83,8 @@ public class RestoreBackupableDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void purgeOldBackups(int numBackupsToKeep) throws RocksDBException {
+  public void purgeOldBackups(final int numBackupsToKeep)
+      throws RocksDBException {
     assert(isInitialized());
     purgeOldBackups0(nativeHandle_, numBackupsToKeep);
   }
@@ -94,7 +97,8 @@ public class RestoreBackupableDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void deleteBackup(int backupId) throws RocksDBException {
+  public void deleteBackup(final int backupId)
+      throws RocksDBException {
     assert(isInitialized());
     deleteBackup0(nativeHandle_, backupId);
   }

java/src/main/java/org/rocksdb/RestoreOptions.java

@@ -22,7 +22,7 @@ public class RestoreOptions extends RocksObject {
    *     for persisting in-memory databases.
    *     Default: false
    */
-  public RestoreOptions(boolean keepLogFiles) {
+  public RestoreOptions(final boolean keepLogFiles) {
     super();
     nativeHandle_ = newRestoreOptions(keepLogFiles);
   }

java/src/main/java/org/rocksdb/RocksDB.java

@@ -59,7 +59,7 @@ public class RocksDB extends RocksObject {
    * @param paths a list of strings where each describes a directory
    *     of a library.
    */
-  public static synchronized void loadLibrary(List<String> paths) {
+  public static synchronized void loadLibrary(final List<String> paths) {
     for (CompressionType compressionType : CompressionType.values()) {
       if (compressionType.equals(CompressionType.NO_COMPRESSION)) {
         continue;
@@ -103,7 +103,7 @@ public class RocksDB extends RocksObject {
    *    native library.
    * @see Options#setCreateIfMissing(boolean)
    */
-  public static RocksDB open(String path) throws RocksDBException {
+  public static RocksDB open(final String path) throws RocksDBException {
     // This allows to use the rocksjni default Options instead of
     // the c++ one.
     Options options = new Options();
@@ -140,9 +140,10 @@ public class RocksDB extends RocksObject {
    *    native library.
    * @see DBOptions#setCreateIfMissing(boolean)
    */
-  public static RocksDB open(String path,
+  public static RocksDB open(final String path,
-      List<ColumnFamilyDescriptor> columnFamilyDescriptors,
+      final List<ColumnFamilyDescriptor> columnFamilyDescriptors,
-      List<ColumnFamilyHandle> columnFamilyHandles) throws RocksDBException {
+      final List<ColumnFamilyHandle> columnFamilyHandles)
+      throws RocksDBException {
     // This allows to use the rocksjni default Options instead of
     // the c++ one.
     DBOptions options = new DBOptions();
@@ -173,7 +174,7 @@ public class RocksDB extends RocksObject {
    *
    * @see Options#setCreateIfMissing(boolean)
    */
-  public static RocksDB open(Options options, String path)
+  public static RocksDB open(final Options options, final String path)
       throws RocksDBException {
     // when non-default Options is used, keeping an Options reference
     // in RocksDB can prevent Java to GC during the life-time of
@@ -220,9 +221,9 @@ public class RocksDB extends RocksObject {
    *
    * @see DBOptions#setCreateIfMissing(boolean)
    */
-  public static RocksDB open(DBOptions options, String path,
+  public static RocksDB open(final DBOptions options, final String path,
-      List<ColumnFamilyDescriptor> columnFamilyDescriptors,
+      final List<ColumnFamilyDescriptor> columnFamilyDescriptors,
-      List<ColumnFamilyHandle> columnFamilyHandles)
+      final List<ColumnFamilyHandle> columnFamilyHandles)
       throws RocksDBException {
     RocksDB db = new RocksDB();
     List<Long> cfReferences = db.open(options.nativeHandle_, path,
@@ -246,7 +247,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public static RocksDB openReadOnly(String path)
+  public static RocksDB openReadOnly(final String path)
       throws RocksDBException {
     // This allows to use the rocksjni default Options instead of
     // the c++ one.
@@ -269,9 +270,10 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public static RocksDB openReadOnly(String path,
+  public static RocksDB openReadOnly(final String path,
-      List<ColumnFamilyDescriptor> columnFamilyDescriptors,
+      final List<ColumnFamilyDescriptor> columnFamilyDescriptors,
-      List<ColumnFamilyHandle> columnFamilyHandles) throws RocksDBException {
+      final List<ColumnFamilyHandle> columnFamilyHandles)
+      throws RocksDBException {
     // This allows to use the rocksjni default Options instead of
     // the c++ one.
     DBOptions options = new DBOptions();
@@ -296,7 +298,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public static RocksDB openReadOnly(Options options, String path)
+  public static RocksDB openReadOnly(final Options options, final String path)
       throws RocksDBException {
     // when non-default Options is used, keeping an Options reference
     // in RocksDB can prevent Java to GC during the life-time of
@@ -330,9 +332,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public static RocksDB openReadOnly(DBOptions options, String path,
+  public static RocksDB openReadOnly(final DBOptions options, final String path,
-      List<ColumnFamilyDescriptor> columnFamilyDescriptors,
+      final List<ColumnFamilyDescriptor> columnFamilyDescriptors,
-      List<ColumnFamilyHandle> columnFamilyHandles)
+      final List<ColumnFamilyHandle> columnFamilyHandles)
       throws RocksDBException {
     // when non-default Options is used, keeping an Options reference
     // in RocksDB can prevent Java to GC during the life-time of
@@ -358,8 +360,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public static List<byte[]> listColumnFamilies(Options options, String path)
+  public static List<byte[]> listColumnFamilies(final Options options,
-      throws RocksDBException {
+      final String path) throws RocksDBException {
     return RocksDB.listColumnFamilies(options.nativeHandle_, path);
   }
 
@@ -391,7 +393,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void put(byte[] key, byte[] value) throws RocksDBException {
+  public void put(final byte[] key, final byte[] value) throws RocksDBException {
     put(nativeHandle_, key, key.length, value, value.length);
   }
 
@@ -409,8 +411,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void put(ColumnFamilyHandle columnFamilyHandle, byte[] key,
+  public void put(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] value) throws RocksDBException {
+      final byte[] key, final byte[] value) throws RocksDBException {
     put(nativeHandle_, key, key.length, value, value.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -425,8 +427,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void put(WriteOptions writeOpts, byte[] key, byte[] value)
+  public void put(final WriteOptions writeOpts, final byte[] key,
-      throws RocksDBException {
+      final byte[] value) throws RocksDBException {
     put(nativeHandle_, writeOpts.nativeHandle_,
         key, key.length, value, value.length);
   }
@@ -447,8 +449,9 @@ public class RocksDB extends RocksObject {
    *    native library.
    * @see IllegalArgumentException
    */
-  public void put(ColumnFamilyHandle columnFamilyHandle, WriteOptions writeOpts,
+  public void put(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] key, byte[] value) throws RocksDBException {
+      final WriteOptions writeOpts, final byte[] key,
+      final byte[] value) throws RocksDBException {
     put(nativeHandle_, writeOpts.nativeHandle_, key, key.length, value, value.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -465,7 +468,7 @@ public class RocksDB extends RocksObject {
    *    found in block-cache.
    * @return boolean value indicating if key does not exist or might exist.
    */
-  public boolean keyMayExist(byte[] key, StringBuffer value){
+  public boolean keyMayExist(final byte[] key, final StringBuffer value){
     return keyMayExist(key, key.length, value);
   }
 
@@ -482,8 +485,8 @@ public class RocksDB extends RocksObject {
    *    found in block-cache.
    * @return boolean value indicating if key does not exist or might exist.
    */
-  public boolean keyMayExist(ColumnFamilyHandle columnFamilyHandle,
+  public boolean keyMayExist(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] key, StringBuffer value){
+      final byte[] key, final StringBuffer value){
     return keyMayExist(key, key.length, columnFamilyHandle.nativeHandle_,
         value);
   }
@@ -501,8 +504,8 @@ public class RocksDB extends RocksObject {
    *    found in block-cache.
    * @return boolean value indicating if key does not exist or might exist.
    */
-  public boolean keyMayExist(ReadOptions readOptions,
+  public boolean keyMayExist(final ReadOptions readOptions,
-      byte[] key, StringBuffer value){
+      final byte[] key, final StringBuffer value){
     return keyMayExist(readOptions.nativeHandle_,
         key, key.length, value);
   }
@@ -521,8 +524,9 @@ public class RocksDB extends RocksObject {
    *    found in block-cache.
    * @return boolean value indicating if key does not exist or might exist.
    */
-  public boolean keyMayExist(ReadOptions readOptions,
+  public boolean keyMayExist(final ReadOptions readOptions,
-      ColumnFamilyHandle columnFamilyHandle, byte[] key, StringBuffer value){
+      final ColumnFamilyHandle columnFamilyHandle, final byte[] key,
+      final StringBuffer value){
     return keyMayExist(readOptions.nativeHandle_,
         key, key.length, columnFamilyHandle.nativeHandle_,
         value);
@@ -537,7 +541,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void write(WriteOptions writeOpts, WriteBatch updates)
+  public void write(final WriteOptions writeOpts, final WriteBatch updates)
       throws RocksDBException {
     write0(writeOpts.nativeHandle_, updates.nativeHandle_);
   }
@@ -551,8 +555,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void write(WriteOptions writeOpts, WriteBatchWithIndex updates)
+  public void write(final WriteOptions writeOpts,
-      throws RocksDBException {
+      final WriteBatchWithIndex updates) throws RocksDBException {
     write1(writeOpts.nativeHandle_, updates.nativeHandle_);
   }
 
@@ -566,7 +570,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void merge(byte[] key, byte[] value) throws RocksDBException {
+  public void merge(final byte[] key, final byte[] value) throws RocksDBException {
     merge(nativeHandle_, key, key.length, value, value.length);
   }
 
@@ -581,8 +585,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void merge(ColumnFamilyHandle columnFamilyHandle, byte[] key,
+  public void merge(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] value) throws RocksDBException {
+      final byte[] key, final byte[] value) throws RocksDBException {
     merge(nativeHandle_, key, key.length, value, value.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -598,8 +602,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void merge(WriteOptions writeOpts, byte[] key, byte[] value)
+  public void merge(final WriteOptions writeOpts, final byte[] key,
-      throws RocksDBException {
+      final byte[] value) throws RocksDBException {
     merge(nativeHandle_, writeOpts.nativeHandle_,
         key, key.length, value, value.length);
   }
@@ -616,9 +620,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void merge(ColumnFamilyHandle columnFamilyHandle,
+  public void merge(final ColumnFamilyHandle columnFamilyHandle,
-      WriteOptions writeOpts, byte[] key, byte[] value)
+      final WriteOptions writeOpts, final byte[] key,
-      throws RocksDBException {
+      final byte[] value) throws RocksDBException {
     merge(nativeHandle_, writeOpts.nativeHandle_,
         key, key.length, value, value.length,
         columnFamilyHandle.nativeHandle_);
@@ -638,7 +642,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public int get(byte[] key, byte[] value) throws RocksDBException {
+  public int get(final byte[] key, final byte[] value) throws RocksDBException {
     return get(nativeHandle_, key, key.length, value, value.length);
   }
 
@@ -659,8 +663,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public int get(ColumnFamilyHandle columnFamilyHandle, byte[] key, byte[] value)
+  public int get(final ColumnFamilyHandle columnFamilyHandle, final byte[] key,
-      throws RocksDBException, IllegalArgumentException {
+      final byte[] value) throws RocksDBException, IllegalArgumentException {
     return get(nativeHandle_, key, key.length, value, value.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -681,8 +685,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public int get(ReadOptions opt, byte[] key, byte[] value)
+  public int get(final ReadOptions opt, final byte[] key,
-      throws RocksDBException {
+      final byte[] value) throws RocksDBException {
     return get(nativeHandle_, opt.nativeHandle_,
                key, key.length, value, value.length);
   }
@@ -704,8 +708,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public int get(ColumnFamilyHandle columnFamilyHandle, ReadOptions opt, byte[] key,
+  public int get(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] value) throws RocksDBException {
+      final ReadOptions opt, final byte[] key, final byte[] value)
+      throws RocksDBException {
     return get(nativeHandle_, opt.nativeHandle_, key, key.length, value,
         value.length, columnFamilyHandle.nativeHandle_);
   }
@@ -722,7 +727,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public byte[] get(byte[] key) throws RocksDBException {
+  public byte[] get(final byte[] key) throws RocksDBException {
     return get(nativeHandle_, key, key.length);
   }
 
@@ -740,7 +745,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public byte[] get(ColumnFamilyHandle columnFamilyHandle, byte[] key)
+  public byte[] get(final ColumnFamilyHandle columnFamilyHandle, final byte[] key)
       throws RocksDBException {
     return get(nativeHandle_, key, key.length, columnFamilyHandle.nativeHandle_);
   }
@@ -758,7 +763,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public byte[] get(ReadOptions opt, byte[] key) throws RocksDBException {
+  public byte[] get(final ReadOptions opt, final byte[] key)
+      throws RocksDBException {
     return get(nativeHandle_, opt.nativeHandle_, key, key.length);
   }
 
@@ -777,8 +783,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public byte[] get(ColumnFamilyHandle columnFamilyHandle, ReadOptions opt,
+  public byte[] get(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] key) throws RocksDBException {
+      final ReadOptions opt, final byte[] key) throws RocksDBException {
     return get(nativeHandle_, opt.nativeHandle_, key, key.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -793,7 +799,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public Map<byte[], byte[]> multiGet(List<byte[]> keys)
+  public Map<byte[], byte[]> multiGet(final List<byte[]> keys)
       throws RocksDBException {
     assert(keys.size() != 0);
 
@@ -830,8 +836,8 @@ public class RocksDB extends RocksObject {
    * @throws IllegalArgumentException thrown if the size of passed keys is not
    *    equal to the amount of passed column family handles.
    */
-  public Map<byte[], byte[]> multiGet(List<ColumnFamilyHandle> columnFamilyHandleList,
+  public Map<byte[], byte[]> multiGet(final List<ColumnFamilyHandle> columnFamilyHandleList,
-      List<byte[]> keys) throws RocksDBException, IllegalArgumentException {
+      final List<byte[]> keys) throws RocksDBException, IllegalArgumentException {
     assert(keys.size() != 0);
     // Check if key size equals cfList size. If not a exception must be
     // thrown. If not a Segmentation fault happens.
@@ -863,8 +869,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public Map<byte[], byte[]> multiGet(ReadOptions opt, List<byte[]> keys)
+  public Map<byte[], byte[]> multiGet(final ReadOptions opt,
-      throws RocksDBException {
+      final List<byte[]> keys) throws RocksDBException {
     assert(keys.size() != 0);
 
     List<byte[]> values = multiGet(
@@ -901,9 +907,9 @@ public class RocksDB extends RocksObject {
    * @throws IllegalArgumentException thrown if the size of passed keys is not
    *    equal to the amount of passed column family handles.
    */
-  public Map<byte[], byte[]> multiGet(ReadOptions opt,
+  public Map<byte[], byte[]> multiGet(final ReadOptions opt,
-      List<ColumnFamilyHandle> columnFamilyHandleList, List<byte[]> keys)
+      final List<ColumnFamilyHandle> columnFamilyHandleList,
-      throws RocksDBException {
+      final List<byte[]> keys) throws RocksDBException {
     assert(keys.size() != 0);
     // Check if key size equals cfList size. If not a exception must be
     // thrown. If not a Segmentation fault happens.
@@ -936,7 +942,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void remove(byte[] key) throws RocksDBException {
+  public void remove(final byte[] key) throws RocksDBException {
     remove(nativeHandle_, key, key.length);
   }
 
@@ -952,7 +958,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void remove(ColumnFamilyHandle columnFamilyHandle, byte[] key)
+  public void remove(final ColumnFamilyHandle columnFamilyHandle, final byte[] key)
       throws RocksDBException {
     remove(nativeHandle_, key, key.length, columnFamilyHandle.nativeHandle_);
   }
@@ -968,7 +974,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void remove(WriteOptions writeOpt, byte[] key)
+  public void remove(final WriteOptions writeOpt, final byte[] key)
       throws RocksDBException {
     remove(nativeHandle_, writeOpt.nativeHandle_, key, key.length);
   }
@@ -986,8 +992,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void remove(ColumnFamilyHandle columnFamilyHandle, WriteOptions writeOpt,
+  public void remove(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] key) throws RocksDBException {
+      final WriteOptions writeOpt, final byte[] key)
+      throws RocksDBException {
     remove(nativeHandle_, writeOpt.nativeHandle_, key, key.length,
         columnFamilyHandle.nativeHandle_);
   }
@@ -1018,8 +1025,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public String getProperty(ColumnFamilyHandle columnFamilyHandle, String property)
+  public String getProperty(final ColumnFamilyHandle columnFamilyHandle,
-      throws RocksDBException {
+      final String property) throws RocksDBException {
     return getProperty0(nativeHandle_, columnFamilyHandle.nativeHandle_, property,
         property.length());
   }
@@ -1046,7 +1053,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public String getProperty(String property) throws RocksDBException {
+  public String getProperty(final String property) throws RocksDBException {
     return getProperty0(nativeHandle_, property, property.length());
   }
 
@@ -1072,7 +1079,7 @@ public class RocksDB extends RocksObject {
    *
    * @throws RocksDBException if an error happens in the underlying native code.
    */
-  public long getLongProperty(String property) throws RocksDBException {
+  public long getLongProperty(final String property) throws RocksDBException {
     return getLongProperty(nativeHandle_, property, property.length());
   }
 
@@ -1100,8 +1107,8 @@ public class RocksDB extends RocksObject {
    *
    * @throws RocksDBException if an error happens in the underlying native code.
    */
-  public long getLongProperty(ColumnFamilyHandle columnFamilyHandle, String property)
+  public long getLongProperty(final ColumnFamilyHandle columnFamilyHandle,
-      throws RocksDBException {
+      final String property) throws RocksDBException {
     return getLongProperty(nativeHandle_, columnFamilyHandle.nativeHandle_, property,
         property.length());
   }
@@ -1135,7 +1142,7 @@ public class RocksDB extends RocksObject {
    * @param readOptions {@link ReadOptions} instance.
    * @return instance of iterator object.
    */
-  public RocksIterator newIterator(ReadOptions readOptions) {
+  public RocksIterator newIterator(final ReadOptions readOptions) {
     return new RocksIterator(this, iterator(nativeHandle_,
         readOptions.nativeHandle_));
   }
@@ -1185,7 +1192,7 @@ public class RocksDB extends RocksObject {
    *     instance
    * @return instance of iterator object.
    */
-  public RocksIterator newIterator(ColumnFamilyHandle columnFamilyHandle) {
+  public RocksIterator newIterator(final ColumnFamilyHandle columnFamilyHandle) {
     return new RocksIterator(this, iteratorCF(nativeHandle_,
         columnFamilyHandle.nativeHandle_));
   }
@@ -1205,8 +1212,8 @@ public class RocksDB extends RocksObject {
    * @param readOptions {@link ReadOptions} instance.
    * @return instance of iterator object.
    */
-  public RocksIterator newIterator(ColumnFamilyHandle columnFamilyHandle,
+  public RocksIterator newIterator(final ColumnFamilyHandle columnFamilyHandle,
-      ReadOptions readOptions) {
+      final ReadOptions readOptions) {
     return new RocksIterator(this, iteratorCF(nativeHandle_,
         columnFamilyHandle.nativeHandle_, readOptions.nativeHandle_));
   }
@@ -1225,7 +1232,7 @@ public class RocksDB extends RocksObject {
    *    native library.
    */
   public List<RocksIterator> newIterators(
-      List<ColumnFamilyHandle> columnFamilyHandleList) throws RocksDBException {
+      final List<ColumnFamilyHandle> columnFamilyHandleList) throws RocksDBException {
     return newIterators(columnFamilyHandleList, new ReadOptions());
   }
 
@@ -1244,8 +1251,8 @@ public class RocksDB extends RocksObject {
    *    native library.
    */
   public List<RocksIterator> newIterators(
-      List<ColumnFamilyHandle> columnFamilyHandleList,
+      final List<ColumnFamilyHandle> columnFamilyHandleList,
-      ReadOptions readOptions) throws RocksDBException {
+      final ReadOptions readOptions) throws RocksDBException {
     List<RocksIterator> iterators =
         new ArrayList<>(columnFamilyHandleList.size());
 
@@ -1278,7 +1285,7 @@ public class RocksDB extends RocksObject {
    *    native library.
    */
   public ColumnFamilyHandle createColumnFamily(
-      ColumnFamilyDescriptor columnFamilyDescriptor)
+      final ColumnFamilyDescriptor columnFamilyDescriptor)
       throws RocksDBException {
     return new ColumnFamilyHandle(this, createColumnFamily(nativeHandle_,
         columnFamilyDescriptor));
@@ -1295,7 +1302,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if error happens in underlying
    *    native library.
    */
-  public void dropColumnFamily(ColumnFamilyHandle columnFamilyHandle)
+  public void dropColumnFamily(final ColumnFamilyHandle columnFamilyHandle)
       throws RocksDBException, IllegalArgumentException {
     // throws RocksDBException if something goes wrong
     dropColumnFamily(nativeHandle_, columnFamilyHandle.nativeHandle_);
@@ -1314,7 +1321,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void flush(FlushOptions flushOptions)
+  public void flush(final FlushOptions flushOptions)
       throws RocksDBException {
     flush(nativeHandle_, flushOptions.nativeHandle_);
   }
@@ -1331,8 +1338,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void flush(FlushOptions flushOptions,
+  public void flush(final FlushOptions flushOptions,
-      ColumnFamilyHandle columnFamilyHandle) throws RocksDBException {
+      final ColumnFamilyHandle columnFamilyHandle) throws RocksDBException {
     flush(nativeHandle_, flushOptions.nativeHandle_,
         columnFamilyHandle.nativeHandle_);
   }
@@ -1376,7 +1383,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(byte[] begin, byte[] end)
+  public void compactRange(final byte[] begin, final byte[] end)
       throws RocksDBException {
     compactRange0(nativeHandle_, begin, begin.length, end,
         end.length, false, -1, 0);
@@ -1406,8 +1413,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(boolean reduce_level, int target_level,
+  public void compactRange(final boolean reduce_level,
-      int target_path_id) throws RocksDBException {
+      final int target_level, final int target_path_id)
+      throws RocksDBException {
     compactRange0(nativeHandle_, reduce_level,
         target_level, target_path_id);
   }
@@ -1439,9 +1447,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(byte[] begin, byte[] end,
+  public void compactRange(final byte[] begin, final byte[] end,
-      boolean reduce_level, int target_level, int target_path_id)
+      final boolean reduce_level, final int target_level,
-      throws RocksDBException {
+      final int target_path_id) throws RocksDBException {
     compactRange0(nativeHandle_, begin, begin.length, end, end.length,
         reduce_level, target_level, target_path_id);
   }
@@ -1472,7 +1480,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(ColumnFamilyHandle columnFamilyHandle)
+  public void compactRange(final ColumnFamilyHandle columnFamilyHandle)
       throws RocksDBException {
     compactRange(nativeHandle_, false, -1, 0,
         columnFamilyHandle.nativeHandle_);
@@ -1504,8 +1512,8 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(ColumnFamilyHandle columnFamilyHandle,
+  public void compactRange(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] begin, byte[] end) throws RocksDBException {
+      final byte[] begin, final byte[] end) throws RocksDBException {
     compactRange(nativeHandle_, begin, begin.length, end, end.length,
         false, -1, 0, columnFamilyHandle.nativeHandle_);
   }
@@ -1541,9 +1549,9 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(ColumnFamilyHandle columnFamilyHandle,
+  public void compactRange(final ColumnFamilyHandle columnFamilyHandle,
-      boolean reduce_level, int target_level, int target_path_id)
+      final boolean reduce_level, final int target_level,
-      throws RocksDBException {
+      final int target_path_id) throws RocksDBException {
     compactRange(nativeHandle_, reduce_level, target_level,
         target_path_id, columnFamilyHandle.nativeHandle_);
   }
@@ -1580,9 +1588,10 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public void compactRange(ColumnFamilyHandle columnFamilyHandle,
+  public void compactRange(final ColumnFamilyHandle columnFamilyHandle,
-      byte[] begin, byte[] end, boolean reduce_level, int target_level,
+      final byte[] begin, final byte[] end, final boolean reduce_level,
-      int target_path_id) throws RocksDBException {
+      final int target_level, final int target_path_id)
+      throws RocksDBException {
     compactRange(nativeHandle_, begin, begin.length, end, end.length,
         reduce_level, target_level, target_path_id,
         columnFamilyHandle.nativeHandle_);
@@ -1630,7 +1639,7 @@ public class RocksDB extends RocksObject {
    * @throws RocksDBException thrown if operation was not performed
    *     successfully.
    */
-  public void enableFileDeletions(boolean force)
+  public void enableFileDeletions(final boolean force)
       throws RocksDBException {
     enableFileDeletions(nativeHandle_, force);
   }
@@ -1652,7 +1661,7 @@ public class RocksDB extends RocksObject {
    * @throws org.rocksdb.RocksDBException if iterator cannot be retrieved
    *     from native-side.
    */
-  public TransactionLogIterator getUpdatesSince(long sequenceNumber)
+  public TransactionLogIterator getUpdatesSince(final long sequenceNumber)
       throws RocksDBException {
     return new TransactionLogIterator(
         getUpdatesSince(nativeHandle_, sequenceNumber));

java/src/main/java/org/rocksdb/RocksDBException.java

@@ -15,7 +15,7 @@ public class RocksDBException extends Exception {
    *
    * @param msg the specified error message.
    */
-  public RocksDBException(String msg) {
+  public RocksDBException(final String msg) {
     super(msg);
   }
 }

java/src/main/java/org/rocksdb/RocksEnv.java

@@ -46,7 +46,7 @@ public class RocksEnv extends RocksObject {
    *
    * @return current {@link org.rocksdb.RocksEnv} instance.
    */
-  public RocksEnv setBackgroundThreads(int num) {
+  public RocksEnv setBackgroundThreads(final int num) {
     return setBackgroundThreads(num, FLUSH_POOL);
   }
 
@@ -61,7 +61,7 @@ public class RocksEnv extends RocksObject {
    * <p>Default number: 1</p>
    * @return current {@link org.rocksdb.RocksEnv} instance.
    */
-  public RocksEnv setBackgroundThreads(int num, int poolID) {
+  public RocksEnv setBackgroundThreads(final int num, final int poolID) {
     setBackgroundThreads(nativeHandle_, num, poolID);
     return this;
   }
@@ -77,7 +77,7 @@ public class RocksEnv extends RocksObject {
    *
    * @return the thread pool queue length.
    */
-  public int getThreadPoolQueueLen(int poolID) {
+  public int getThreadPoolQueueLen(final int poolID) {
     return getThreadPoolQueueLen(nativeHandle_, poolID);
   }
   private native int getThreadPoolQueueLen(long handle, int poolID);
@@ -91,7 +91,7 @@ public class RocksEnv extends RocksObject {
    * the ownership of the input handle.  As a result, calling
    * {@code dispose()} of the created RocksEnv will be no-op.</p>
    */
-  RocksEnv(long handle) {
+  RocksEnv(final long handle) {
     super();
     nativeHandle_ = handle;
     disOwnNativeHandle();

java/src/main/java/org/rocksdb/SkipListMemTableConfig.java

@@ -24,7 +24,7 @@ public class SkipListMemTableConfig extends MemTableConfig {
    *     seeks with consecutive keys.
    * @return the current instance of SkipListMemTableConfig
    */
-  public SkipListMemTableConfig setLookahead(long lookahead) {
+  public SkipListMemTableConfig setLookahead(final long lookahead) {
     lookahead_ = lookahead;
     return this;
   }

java/src/main/java/org/rocksdb/Snapshot.java

@@ -9,7 +9,7 @@ package org.rocksdb;
  * Snapshot of database
  */
 public class Snapshot extends RocksObject {
-  Snapshot(long nativeHandle) {
+  Snapshot(final long nativeHandle) {
     super();
     nativeHandle_ = nativeHandle;
   }

java/src/main/java/org/rocksdb/Statistics.java

@@ -13,7 +13,7 @@ public class Statistics {
 
   private final long statsHandle_;
 
-  public Statistics(long statsHandle) {
+  public Statistics(final long statsHandle) {
     statsHandle_ = statsHandle;
   }
 
@@ -22,7 +22,7 @@ public class Statistics {
     return getTickerCount0(tickerType.getValue(), statsHandle_);
   }
 
-  public HistogramData geHistogramData(HistogramType histogramType) {
+  public HistogramData geHistogramData(final HistogramType histogramType) {
     assert(isInitialized());
     return geHistogramData0(
         histogramType.getValue(), statsHandle_);

java/src/main/java/org/rocksdb/StatisticsCollector.java

@@ -32,8 +32,9 @@ public class StatisticsCollector {
    * @param statsCollectionIntervalInMilliSeconds Statistics collection time
    *        period (specified in milliseconds).
    */
-  public StatisticsCollector(List<StatsCollectorInput> statsCollectorInputList,
+  public StatisticsCollector(
-      int statsCollectionIntervalInMilliSeconds) {
+      final List<StatsCollectorInput> statsCollectorInputList,
+      final int statsCollectionIntervalInMilliSeconds) {
     _statsCollectorInputList = statsCollectorInputList;
     _statsCollectionInterval = statsCollectionIntervalInMilliSeconds;
 
@@ -51,7 +52,7 @@ public class StatisticsCollector {
    *        killing the collection process.
    * @throws java.lang.InterruptedException thrown if Threads are interrupted.
    */
-  public void shutDown(int shutdownTimeout) throws InterruptedException {
+  public void shutDown(final int shutdownTimeout) throws InterruptedException {
     _isRunning = false;
 
     _executorService.shutdownNow();

java/src/main/java/org/rocksdb/StatsCollectorInput.java

@@ -19,8 +19,8 @@ public class StatsCollectorInput {
    * @param statistics Reference of DB statistics.
    * @param statsCallback Reference of statistics callback interface.
    */
-  public StatsCollectorInput(Statistics statistics,
+  public StatsCollectorInput(final Statistics statistics,
-      StatisticsCollectorCallback statsCallback) {
+      final StatisticsCollectorCallback statsCallback) {
     _statistics = statistics;
     _statsCallback = statsCallback;
   }

java/src/main/java/org/rocksdb/TransactionLogIterator.java

@@ -56,7 +56,7 @@ public class TransactionLogIterator extends RocksObject {
    *
    * @param nativeHandle address to native address.
    */
-  TransactionLogIterator(long nativeHandle) {
+  TransactionLogIterator(final long nativeHandle) {
     super();
     nativeHandle_ = nativeHandle;
   }
@@ -70,7 +70,7 @@ public class TransactionLogIterator extends RocksObject {
    * by a TransactionLogIterator containing a sequence
    * number and a {@link WriteBatch} instance.</p>
    */
-  public class BatchResult {
+  public final class BatchResult {
     /**
      * <p>Constructor of BatchResult class.</p>
      *
@@ -78,7 +78,8 @@ public class TransactionLogIterator extends RocksObject {
      * @param nativeHandle to {@link org.rocksdb.WriteBatch}
      *     native instance.
      */
-    public BatchResult(long sequenceNumber, long nativeHandle) {
+    public BatchResult(final long sequenceNumber,
+        final long nativeHandle) {
       sequenceNumber_ = sequenceNumber;
       writeBatch_ = new WriteBatch(nativeHandle);
     }

java/src/main/java/org/rocksdb/TtlDB.java

@@ -63,7 +63,7 @@ public class TtlDB extends RocksDB {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public static TtlDB open(Options options, String db_path)
+  public static TtlDB open(final Options options, final String db_path)
       throws RocksDBException {
     return open(options, db_path, 0, false);
   }
@@ -82,8 +82,8 @@ public class TtlDB extends RocksDB {
    * @throws RocksDBException thrown if an error occurs within the native
    *     part of the library.
    */
-  public static TtlDB open(Options options, String db_path, int ttl,
+  public static TtlDB open(final Options options, final String db_path,
-      boolean readOnly) throws RocksDBException {
+      final int ttl, final boolean readOnly) throws RocksDBException {
     TtlDB ttldb = new TtlDB();
     ttldb.open(options.nativeHandle_, db_path, ttl, readOnly);
     return ttldb;
@@ -108,10 +108,11 @@ public class TtlDB extends RocksDB {
    * @throws java.lang.IllegalArgumentException when there is not a ttl value
    *     per given column family handle.
    */
-  public static TtlDB open(DBOptions options, String db_path,
+  public static TtlDB open(final DBOptions options, final String db_path,
-      List<ColumnFamilyDescriptor> columnFamilyDescriptors,
+      final List<ColumnFamilyDescriptor> columnFamilyDescriptors,
-      List<ColumnFamilyHandle> columnFamilyHandles,
+      final List<ColumnFamilyHandle> columnFamilyHandles,
-      List<Integer> ttlValues, boolean readOnly) throws RocksDBException {
+      final List<Integer> ttlValues, final boolean readOnly)
+      throws RocksDBException {
     if (columnFamilyDescriptors.size() != ttlValues.size()) {
       throw new IllegalArgumentException("There must be a ttl value per column" +
           "family handle.");
@@ -143,8 +144,8 @@ public class TtlDB extends RocksDB {
    *    native library.
    */
   public ColumnFamilyHandle createColumnFamilyWithTtl(
-      ColumnFamilyDescriptor columnFamilyDescriptor, int ttl)
+      final ColumnFamilyDescriptor columnFamilyDescriptor,
-      throws RocksDBException {
+      final int ttl) throws RocksDBException {
     assert(isInitialized());
     return new ColumnFamilyHandle(this,
         createColumnFamilyWithTtl(nativeHandle_,

java/src/main/java/org/rocksdb/VectorMemTableConfig.java

@@ -20,7 +20,7 @@ public class VectorMemTableConfig extends MemTableConfig {
    * @param size the initial size of the vector.
    * @return the reference to the current config.
    */
-  public VectorMemTableConfig setReservedSize(int size) {
+  public VectorMemTableConfig setReservedSize(final int size) {
     reservedSize_ = size;
     return this;
   }

java/src/main/java/org/rocksdb/WBWIRocksIterator.java

@@ -8,7 +8,7 @@ package org.rocksdb;
 public class WBWIRocksIterator extends AbstractRocksIterator<WriteBatchWithIndex> {
   private final WriteEntry entry = new WriteEntry();
 
-  protected WBWIRocksIterator(WriteBatchWithIndex wbwi, long nativeHandle) {
+  protected WBWIRocksIterator(final WriteBatchWithIndex wbwi, final long nativeHandle) {
     super(wbwi, nativeHandle);
   }
 

java/src/main/java/org/rocksdb/WriteBatch.java

@@ -36,7 +36,7 @@ public class WriteBatch extends AbstractWriteBatch {
    *
    * @param reserved_bytes reserved size for WriteBatch
    */
-  public WriteBatch(int reserved_bytes) {
+  public WriteBatch(final int reserved_bytes) {
     nativeHandle_ = 0;
     newWriteBatch(reserved_bytes);
   }
@@ -49,7 +49,7 @@ public class WriteBatch extends AbstractWriteBatch {
    *
    * @throws RocksDBException If we cannot iterate over the batch
    */
-  public void iterate(Handler handler) throws RocksDBException {
+  public void iterate(final Handler handler) throws RocksDBException {
     iterate(handler.nativeHandle_);
   }
 
@@ -60,7 +60,7 @@ public class WriteBatch extends AbstractWriteBatch {
    *
    * @param nativeHandle address of native instance.
    */
-  WriteBatch(long nativeHandle) {
+  WriteBatch(final long nativeHandle) {
     super();
     disOwnNativeHandle();
     nativeHandle_ = nativeHandle;

java/src/main/java/org/rocksdb/WriteBatchWithIndex.java

@@ -40,7 +40,7 @@ public class WriteBatchWithIndex extends AbstractWriteBatch {
    *   inserting a duplicate key, in this way an iterator will never
    *   show two entries with the same key.
    */
-  public WriteBatchWithIndex(boolean overwriteKey) {
+  public WriteBatchWithIndex(final boolean overwriteKey) {
     super();
     newWriteBatchWithIndex(overwriteKey);
   }
@@ -58,8 +58,8 @@ public class WriteBatchWithIndex extends AbstractWriteBatch {
    *   inserting a duplicate key, in this way an iterator will never
    *   show two entries with the same key.
    */
-  public WriteBatchWithIndex(AbstractComparator<? extends AbstractSlice<?>>
+  public WriteBatchWithIndex(final AbstractComparator<? extends AbstractSlice<?>>
-      fallbackIndexComparator, int reservedBytes, boolean overwriteKey) {
+      fallbackIndexComparator, final int reservedBytes, final boolean overwriteKey) {
     super();
     newWriteBatchWithIndex(fallbackIndexComparator.nativeHandle_, reservedBytes, overwriteKey);
   }
@@ -75,7 +75,7 @@ public class WriteBatchWithIndex extends AbstractWriteBatch {
    * @param columnFamilyHandle The column family to iterate over
    * @return An iterator for the Write Batch contents, restricted to the column family
    */
-  public WBWIRocksIterator newIterator(ColumnFamilyHandle columnFamilyHandle) {
+  public WBWIRocksIterator newIterator(final ColumnFamilyHandle columnFamilyHandle) {
     return new WBWIRocksIterator(this, iterator1(columnFamilyHandle.nativeHandle_));
   }
 
@@ -103,8 +103,8 @@ public class WriteBatchWithIndex extends AbstractWriteBatch {
    * @return An iterator which shows a view comprised of both the database point-in-time
    * from baseIterator and modifications made in this write batch.
    */
-  public RocksIterator newIteratorWithBase(ColumnFamilyHandle columnFamilyHandle,
+  public RocksIterator newIteratorWithBase(final ColumnFamilyHandle columnFamilyHandle,
-      RocksIterator baseIterator) {
+      final RocksIterator baseIterator) {
     RocksIterator iterator = new RocksIterator(
         baseIterator.parent_,
         iteratorWithBase(columnFamilyHandle.nativeHandle_, baseIterator.nativeHandle_));
@@ -122,7 +122,7 @@ public class WriteBatchWithIndex extends AbstractWriteBatch {
    * @return An iterator which shows a view comprised of both the database point-in-time
    * from baseIterator and modifications made in this write batch.
    */
-  public RocksIterator newIteratorWithBase(RocksIterator baseIterator) {
+  public RocksIterator newIteratorWithBase(final RocksIterator baseIterator) {
     return newIteratorWithBase(baseIterator.parent_.getDefaultColumnFamily(), baseIterator);
   }
 

java/src/main/java/org/rocksdb/WriteOptions.java

@@ -47,7 +47,7 @@ public class WriteOptions extends RocksObject {
    *     should be synchronized.
    * @return the instance of the current WriteOptions.
    */
-  public WriteOptions setSync(boolean flag) {
+  public WriteOptions setSync(final boolean flag) {
     setSync(nativeHandle_, flag);
     return this;
   }
@@ -82,7 +82,7 @@ public class WriteOptions extends RocksObject {
    *     write-ahead-log on writes.
    * @return the instance of the current WriteOptions.
    */
-  public WriteOptions setDisableWAL(boolean flag) {
+  public WriteOptions setDisableWAL(final boolean flag) {
     setDisableWAL(nativeHandle_, flag);
     return this;
   }

java/src/main/java/org/rocksdb/util/Environment.java

@@ -22,11 +22,11 @@ public class Environment {
     return (ARCH.indexOf("64") > 0);
   }
 
-  public static String getSharedLibraryName(String name) {
+  public static String getSharedLibraryName(final String name) {
     return name + "jni";
   }
 
-  public static String getSharedLibraryFileName(String name) {
+  public static String getSharedLibraryFileName(final String name) {
     return appendLibOsSuffix("lib" + getSharedLibraryName(name), true);
   }