Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/topology/Switch.java b/src/main/java/net/onrc/onos/core/topology/Switch.java
index 0b97dfa..d9796be 100644
--- a/src/main/java/net/onrc/onos/core/topology/Switch.java
+++ b/src/main/java/net/onrc/onos/core/topology/Switch.java
@@ -4,28 +4,28 @@
 
 /**
  * Interface of Switch Object exposed to the "NB" read-only Topology.
- *
+ * <p/>
  * Everything returned by these interfaces must be either Unmodifiable view,
  * immutable object, or a copy of the original "SB" In-memory Topology.
- *
  */
 public interface Switch {
-	public Long getDpid();
+    public Long getDpid();
 
-	public Collection<Port> getPorts();
+    public Collection<Port> getPorts();
 
-	public Port getPort(Long number);
+    public Port getPort(Long number);
 
 
-	// Graph traversal API
-	// XXX What is the Definition of neighbor? Link exist in both direction or one-way is sufficient to be a neighbor, etc.
-	public Iterable<Switch> getNeighbors();
+    // Graph traversal API
+    // XXX What is the Definition of neighbor? Link exist in both direction or one-way is sufficient to be a neighbor, etc.
+    public Iterable<Switch> getNeighbors();
 
-	public Iterable<Link> getOutgoingLinks();
-	public Iterable<Link> getIncomingLinks();
+    public Iterable<Link> getOutgoingLinks();
 
-	public Link getLinkToNeighbor(Long dpid);
+    public Iterable<Link> getIncomingLinks();
 
-	// XXX Iterable or Collection?
-	public Collection<Device> getDevices();
+    public Link getLinkToNeighbor(Long dpid);
+
+    // XXX Iterable or Collection?
+    public Collection<Device> getDevices();
 }