Make Logger instance final as SL4J suggests
diff --git a/src/main/java/net/floodlightcontroller/core/web/AllSwitchStatisticsResource.java b/src/main/java/net/floodlightcontroller/core/web/AllSwitchStatisticsResource.java
index d012fc8..a014795 100644
--- a/src/main/java/net/floodlightcontroller/core/web/AllSwitchStatisticsResource.java
+++ b/src/main/java/net/floodlightcontroller/core/web/AllSwitchStatisticsResource.java
@@ -39,7 +39,7 @@
  * @author readams
  */
 public class AllSwitchStatisticsResource extends SwitchResourceBase {
-    protected static Logger log = 
+    protected final static Logger log = 
         LoggerFactory.getLogger(AllSwitchStatisticsResource.class);
     
     @Get("json")