Addressing review comments

java/org/rocksdb/NativeLibraryLoader.java

@@ -18,7 +18,7 @@ public class NativeLibraryLoader {
     if(tmpDir == null || tmpDir.equals(""))
       temp = File.createTempFile(tempFilePrefix, tempFileSuffix);
     else
-      temp = new File(tmpDir+"/"+sharedLibraryName);
+      temp = new File(tmpDir + "/" + sharedLibraryName);
 
     temp.deleteOnExit();
 

java/org/rocksdb/RocksDB.java

@@ -31,6 +31,9 @@ public class RocksDB extends RocksObject {
   /**
    * Loads the necessary library files.
    * Calling this method twice will have no effect.
+   * By default the method extracts the shared library for loading at
+   * java.io.tmpdir, however, you can override this temporary location by
+   * setting the environment variable ROCKSDB_SHAREDLIB_DIR.
    */
   public static synchronized void loadLibrary() {
     String tmpDir = System.getenv("ROCKSDB_SHAREDLIB_DIR");