Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/util/IPv4.java b/src/main/java/net/onrc/onos/core/util/IPv4.java
index 86795aa..a7f3d24 100644
--- a/src/main/java/net/onrc/onos/core/util/IPv4.java
+++ b/src/main/java/net/onrc/onos/core/util/IPv4.java
@@ -9,8 +9,8 @@
 /**
  * The class representing an IPv4 address.
  */
-@JsonDeserialize(using=IPv4Deserializer.class)
-@JsonSerialize(using=IPv4Serializer.class)
+@JsonDeserialize(using = IPv4Deserializer.class)
+@JsonSerialize(using = IPv4Serializer.class)
 public class IPv4 {
     private int value;
 
@@ -18,7 +18,7 @@
      * Default constructor.
      */
     public IPv4() {
-	this.value = 0;
+        this.value = 0;
     }
 
     /**
@@ -27,7 +27,7 @@
      * @param other the object to copy from.
      */
     public IPv4(IPv4 other) {
-	this.value = other.value;
+        this.value = other.value;
     }
 
     /**
@@ -36,7 +36,7 @@
      * @param value the value to use.
      */
     public IPv4(int value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -48,13 +48,13 @@
         String[] splits = value.split("\\.");
         if (splits.length != 4)
             throw new IllegalArgumentException("Specified IPv4 address must contain four " +
-					       "numerical digits separated by '.'");
+                    "numerical digits separated by '.'");
 
         int result = 0;
         for (int i = 0; i < 4; ++i) {
-            result |= Integer.valueOf(splits[i]) << ((3-i)*8);
+            result |= Integer.valueOf(splits[i]) << ((3 - i) * 8);
         }
-	this.value = result;
+        this.value = result;
     }
 
     /**
@@ -62,7 +62,9 @@
      *
      * @return the value of the IPv4 address.
      */
-    public int value() { return value; }
+    public int value() {
+        return value;
+    }
 
     /**
      * Set the value of the IPv4 address.
@@ -70,7 +72,7 @@
      * @param value the value to set.
      */
     public void setValue(int value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -80,9 +82,9 @@
      */
     @Override
     public String toString() {
-	return ((this.value >> 24) & 0xFF) + "." +
-	    ((this.value >> 16) & 0xFF) + "." +
-	    ((this.value >> 8) & 0xFF) + "." +
-	    (this.value & 0xFF);
+        return ((this.value >> 24) & 0xFF) + "." +
+                ((this.value >> 16) & 0xFF) + "." +
+                ((this.value >> 8) & 0xFF) + "." +
+                (this.value & 0xFF);
     }
 }