diff --git a/src/main/java/net/onrc/onos/datastore/utils/ByteArrayComparator.java b/src/main/java/net/onrc/onos/datastore/utils/ByteArrayComparator.java
index 08290a3..56b088f 100644
--- a/src/main/java/net/onrc/onos/datastore/utils/ByteArrayComparator.java
+++ b/src/main/java/net/onrc/onos/datastore/utils/ByteArrayComparator.java
@@ -3,12 +3,20 @@
 import java.nio.ByteBuffer;
 import java.util.Comparator;
 
+/**
+ * Comparator which will compares the content of byte[].
+ *
+ * Expected to be used with TreeMap, etc. when you want to use byte[] as a key.
+ */
 public final class ByteArrayComparator implements Comparator<byte[]> {
 
+    /**
+     * Instance which can be used, if you want to avoid instantiation per Map.
+     */
     public static final ByteArrayComparator BYTEARRAY_COMPARATOR = new ByteArrayComparator();
 
     @Override
-    public int compare(byte[] o1, byte[] o2) {
+    public int compare(final byte[] o1, final byte[] o2) {
 	final ByteBuffer b1 = ByteBuffer.wrap(o1);
 	final ByteBuffer b2 = ByteBuffer.wrap(o2);
 	return b1.compareTo(b2);