Make Logger instance final as SL4J suggests
diff --git a/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntries.java b/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntries.java
index ba28619..e733843 100644
--- a/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntries.java
+++ b/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntries.java
@@ -47,7 +47,7 @@
  */
 @LogMessageCategory("Static Flow Pusher")
 public class StaticFlowEntries {
-    protected static Logger log = LoggerFactory.getLogger(StaticFlowEntries.class);
+    protected final static Logger log = LoggerFactory.getLogger(StaticFlowEntries.class);
     
     private static class SubActionStruct {
         OFAction action;
diff --git a/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntryPusher.java b/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntryPusher.java
index 4ed59d7..d816d66 100644
--- a/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntryPusher.java
+++ b/src/main/java/net/floodlightcontroller/staticflowentry/StaticFlowEntryPusher.java
@@ -55,7 +55,7 @@
 public class StaticFlowEntryPusher 
     implements IOFSwitchListener, IFloodlightModule, IStaticFlowEntryPusherService,
         IStorageSourceListener, IOFMessageListener, IHAListener {
-    protected static Logger log = LoggerFactory.getLogger(StaticFlowEntryPusher.class);
+    protected final static Logger log = LoggerFactory.getLogger(StaticFlowEntryPusher.class);
     public static final String StaticFlowName = "staticflowentry";
     
     public static final int STATIC_FLOW_APP_ID = 10;
diff --git a/src/main/java/net/floodlightcontroller/staticflowentry/web/ClearStaticFlowEntriesResource.java b/src/main/java/net/floodlightcontroller/staticflowentry/web/ClearStaticFlowEntriesResource.java
index c1d826a..f103e99 100644
--- a/src/main/java/net/floodlightcontroller/staticflowentry/web/ClearStaticFlowEntriesResource.java
+++ b/src/main/java/net/floodlightcontroller/staticflowentry/web/ClearStaticFlowEntriesResource.java
@@ -11,7 +11,7 @@
 import org.slf4j.LoggerFactory;
 
 public class ClearStaticFlowEntriesResource extends ServerResource {
-    protected static Logger log = LoggerFactory.getLogger(ClearStaticFlowEntriesResource.class);
+    protected final static Logger log = LoggerFactory.getLogger(ClearStaticFlowEntriesResource.class);
     
     @Get
     public void ClearStaticFlowEntries() {
diff --git a/src/main/java/net/floodlightcontroller/staticflowentry/web/ListStaticFlowEntriesResource.java b/src/main/java/net/floodlightcontroller/staticflowentry/web/ListStaticFlowEntriesResource.java
index 0ad778f..2bb53ba 100644
--- a/src/main/java/net/floodlightcontroller/staticflowentry/web/ListStaticFlowEntriesResource.java
+++ b/src/main/java/net/floodlightcontroller/staticflowentry/web/ListStaticFlowEntriesResource.java
@@ -14,7 +14,7 @@
 import org.slf4j.LoggerFactory;
 
 public class ListStaticFlowEntriesResource extends ServerResource {
-    protected static Logger log = LoggerFactory.getLogger(ListStaticFlowEntriesResource.class);
+    protected final static Logger log = LoggerFactory.getLogger(ListStaticFlowEntriesResource.class);
     
     @Get
     public Map<String, Map<String, OFFlowMod>> ListStaticFlowEntries() {
diff --git a/src/main/java/net/floodlightcontroller/staticflowentry/web/StaticFlowEntryPusherResource.java b/src/main/java/net/floodlightcontroller/staticflowentry/web/StaticFlowEntryPusherResource.java
index 3b750ae..2886a58 100644
--- a/src/main/java/net/floodlightcontroller/staticflowentry/web/StaticFlowEntryPusherResource.java
+++ b/src/main/java/net/floodlightcontroller/staticflowentry/web/StaticFlowEntryPusherResource.java
@@ -40,7 +40,7 @@
  */
 @LogMessageCategory("Static Flow Pusher")
 public class StaticFlowEntryPusherResource extends ServerResource {
-    protected static Logger log = LoggerFactory.getLogger(StaticFlowEntryPusherResource.class);
+    protected final static Logger log = LoggerFactory.getLogger(StaticFlowEntryPusherResource.class);
     
     /**
      * Checks to see if the user matches IP information without