Enable checkstyle rue to check formal parameter names.

Enable "ParameterName" checkstyle rule to enforce consistent naming
of formal parameters and fix violations that this rue detects.

Change-Id: I5f7f5de469a9b803d082cbe475aff79eb2fe38f2
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
index ed1f306..2e4d079 100644
--- a/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
@@ -75,10 +75,10 @@
     private final SwitchPort dst;
     private STATUS status;
 
-    public static byte[] getLinkID(final Long src_dpid, final Long src_port_no,
-                                   final Long dst_dpid, final Long dst_port_no) {
-        return LinkEvent.getLinkID(src_dpid, src_port_no, dst_dpid,
-                dst_port_no).array();
+    public static byte[] getLinkID(final Long srcDpid, final Long srcPortNo,
+                                   final Long dstDpid, final Long dstPortNo) {
+        return LinkEvent.getLinkID(srcDpid, srcPortNo, dstDpid,
+                dstPortNo).array();
     }
 
     public static long[] getLinkTupleFromKey(final byte[] key) {
@@ -102,13 +102,13 @@
         return tuple;
     }
 
-    public KVLink(final Long src_dpid, final Long src_port_no,
-                  final Long dst_dpid, final Long dst_port_no) {
-        super(DataStoreClient.getClient().getTable(GLOBAL_LINK_TABLE_NAME), getLinkID(src_dpid,
-                src_port_no, dst_dpid, dst_port_no));
+    public KVLink(final Long srcDpid, final Long srcPortNo,
+                  final Long dstDpid, final Long dstPortNo) {
+        super(DataStoreClient.getClient().getTable(GLOBAL_LINK_TABLE_NAME), getLinkID(srcDpid,
+                srcPortNo, dstDpid, dstPortNo));
 
-        src = new SwitchPort(src_dpid, src_port_no);
-        dst = new SwitchPort(dst_dpid, dst_port_no);
+        src = new SwitchPort(srcDpid, srcPortNo);
+        dst = new SwitchPort(dstDpid, dstPortNo);
         status = STATUS.INACTIVE;
     }
 
diff --git a/src/main/java/net/onrc/onos/core/flowprogrammer/FlowPusher.java b/src/main/java/net/onrc/onos/core/flowprogrammer/FlowPusher.java
index 48b2a60..18a5753 100644
--- a/src/main/java/net/onrc/onos/core/flowprogrammer/FlowPusher.java
+++ b/src/main/java/net/onrc/onos/core/flowprogrammer/FlowPusher.java
@@ -360,10 +360,10 @@
          *
          * @param sw      Switch to which messages will be sent.
          * @param queue   Queue of messages.
-         * @param max_msg Limitation of number of messages to be sent. If set to 0,
+         * @param maxMsg Limitation of number of messages to be sent. If set to 0,
          *                all messages in queue will be sent.
          */
-        private void processQueue(IOFSwitch sw, SwitchQueue queue, int max_msg) {
+        private void processQueue(IOFSwitch sw, SwitchQueue queue, int maxMsg) {
             // check sending rate and determine it to be sent or not
             long currentTime = System.currentTimeMillis();
             long size = 0;
@@ -372,7 +372,7 @@
                 int i = 0;
                 while (queue.hasMessageToSend()) {
                     // Number of messages excess the limit
-                    if (0 < max_msg && max_msg <= i) {
+                    if (0 < maxMsg && maxMsg <= i) {
                         break;
                     }
                     ++i;
@@ -430,13 +430,13 @@
     /**
      * Initialize object with threads of given number.
      *
-     * @param number_thread Number of threads to handle messages.
+     * @param numberThreadValue Number of threads to handle messages.
      */
-    public FlowPusher(int number_thread) {
-        if (number_thread > 0) {
-            this.numberThread = number_thread;
+    public FlowPusher(int numberThreadValue) {
+        if (numberThreadValue > 0) {
+            numberThread = numberThreadValue;
         } else {
-            this.numberThread = DEFAULT_NUMBER_THREAD;
+            numberThread = DEFAULT_NUMBER_THREAD;
         }
     }
 
diff --git a/src/main/java/net/onrc/onos/core/topology/LinkEvent.java b/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
index fbf686a..40d7400 100644
--- a/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
@@ -22,10 +22,10 @@
         dst = null;
     }
 
-    public LinkEvent(Long src_dpid, Long src_port_no, Long dst_dpid,
-                     Long dst_port_no) {
-        src = new SwitchPort(src_dpid, src_port_no);
-        dst = new SwitchPort(dst_dpid, dst_port_no);
+    public LinkEvent(Long srcDpid, Long srcPortNo, Long dstDpid,
+                     Long dstPortNo) {
+        src = new SwitchPort(srcDpid, srcPortNo);
+        dst = new SwitchPort(dstDpid, dstPortNo);
     }
 
     public LinkEvent(Link link) {
@@ -50,11 +50,11 @@
 
     public static final int LINKID_BYTES = 2 + PortEvent.PORTID_BYTES * 2;
 
-    public static ByteBuffer getLinkID(Long src_dpid, Long src_port_no,
-                                       Long dst_dpid, Long dst_port_no) {
+    public static ByteBuffer getLinkID(Long srcDpid, Long srcPortNo,
+                                       Long dstDpid, Long dstPortNo) {
         return (ByteBuffer) ByteBuffer.allocate(LinkEvent.LINKID_BYTES).putChar('L')
-                .put(PortEvent.getPortID(src_dpid, src_port_no))
-                .put(PortEvent.getPortID(dst_dpid, dst_port_no)).flip();
+                .put(PortEvent.getPortID(srcDpid, srcPortNo))
+                .put(PortEvent.getPortID(dstDpid, dstPortNo)).flip();
     }
 
     public byte[] getID() {