Fix various logging related issues.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
index 641faaf..e94d948 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowProgrammer.java
@@ -140,7 +140,7 @@
 	case FLOW_REMOVED:
 	    OFFlowRemoved flowMsg = (OFFlowRemoved) msg;
 	    FlowEntryId id = new FlowEntryId(flowMsg.getCookie());
-	    log.debug("Got flow entry removed from " + sw.getId() + ": " + id);
+	    log.debug("Got flow entry removed from {}: {}",sw.getId(), id);
 	    flowManager.flowEntryOnSwitchExpired(sw, id);
 	    break;
 	default: