Addressed some checkstyle, PMD and findbugs violations in the ARP module

Change-Id: I194533ba5f96a7631ea662a93cbcbd8a2c84dea9
diff --git a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java
index 66a17a2..51a6295 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/proxyarp/IArpRequester.java
@@ -5,17 +5,20 @@
 import net.floodlightcontroller.util.MACAddress;
 
 /**
- * Callback interface for modules using the {@link IProxyArpService} to
- * send ARP requests.
+ * Callback interface for modules using the {@link IProxyArpService} to send ARP
+ * requests.
  *
  */
 public interface IArpRequester {
-	/**
-	 * Callback method that will be called by the {@link IProxyArpService} 
-	 * when it receives a reply for a request previously submitted by this
-	 * {@code IArpRequester}.
-	 * @param ipAddress The IP address than an ARP request was sent for
-	 * @param macAddress The MAC address mapped to the requested IP address
-	 */
-	public void arpResponse(InetAddress ipAddress, MACAddress macAddress);
+    /**
+     * Callback method that will be called by the {@link IProxyArpService} when
+     * it receives a reply for a request previously submitted by this
+     * {@code IArpRequester}.
+     *
+     * @param ipAddress
+     *        The IP address than an ARP request was sent for
+     * @param macAddress
+     *        The MAC address mapped to the requested IP address
+     */
+    public void arpResponse(InetAddress ipAddress, MACAddress macAddress);
 }