diff --git a/src/main/java/org/onosproject/segmentrouting/ECMPShortestPathGraph.java b/src/main/java/org/onosproject/segmentrouting/ECMPShortestPathGraph.java
index cd28fcf..b483d9e 100644
--- a/src/main/java/org/onosproject/segmentrouting/ECMPShortestPathGraph.java
+++ b/src/main/java/org/onosproject/segmentrouting/ECMPShortestPathGraph.java
@@ -109,7 +109,7 @@
                     ArrayList<DeviceId> distanceSwArray = distanceDeviceMap
                             .get(currDistance + 1);
                     if (distanceSwArray == null) {
-                        distanceSwArray = new ArrayList<DeviceId>();
+                        distanceSwArray = new ArrayList<>();
                         distanceSwArray.add(reachedDevice);
                         distanceDeviceMap.put(currDistance + 1, distanceSwArray);
                     } else {
@@ -120,7 +120,7 @@
                 ArrayList<Link> upstreamLinkArray =
                         upstreamLinks.get(reachedDevice);
                 if (upstreamLinkArray == null) {
-                    upstreamLinkArray = new ArrayList<Link>();
+                    upstreamLinkArray = new ArrayList<>();
                     upstreamLinkArray.add(copyDefaultLink(link));
                     //upstreamLinkArray.add(link);
                     upstreamLinks.put(reachedDevice, upstreamLinkArray);
@@ -183,7 +183,7 @@
                     ArrayList<DeviceId> distanceSwArray = distanceDeviceMap
                             .get(currDistance + 1);
                     if (distanceSwArray == null) {
-                        distanceSwArray = new ArrayList<DeviceId>();
+                        distanceSwArray = new ArrayList<>();
                         distanceSwArray.add(reachedDevice);
                         distanceDeviceMap.put(currDistance + 1, distanceSwArray);
                     } else {
@@ -194,7 +194,7 @@
                 ArrayList<Link> upstreamLinkArray =
                         upstreamLinks.get(reachedDevice);
                 if (upstreamLinkArray == null) {
-                    upstreamLinkArray = new ArrayList<Link>();
+                    upstreamLinkArray = new ArrayList<>();
                     upstreamLinkArray.add(copyDefaultLink(link));
                     upstreamLinks.put(reachedDevice, upstreamLinkArray);
                 } else {
@@ -234,7 +234,7 @@
         for (Link upstreamLink : upstreamLinks.get(dstDeviceDeviceId)) {
             /* Deep clone the path object */
             Path sofarPath;
-            ArrayList<Link> sofarLinks = new ArrayList<Link>();
+            ArrayList<Link> sofarLinks = new ArrayList<>();
             if (path != null && !path.links().isEmpty()) {
                 sofarLinks.addAll(path.links());
             }
@@ -288,12 +288,10 @@
     public HashMap<Integer, HashMap<DeviceId,
             ArrayList<Path>>> getCompleteLearnedDeviceesAndPaths() {
 
-        HashMap<Integer, HashMap<DeviceId, ArrayList<Path>>> pathGraph = new
-                HashMap<Integer, HashMap<DeviceId, ArrayList<Path>>>();
+        HashMap<Integer, HashMap<DeviceId, ArrayList<Path>>> pathGraph = new HashMap<>();
 
         for (Integer itrIndx : distanceDeviceMap.keySet()) {
-            HashMap<DeviceId, ArrayList<Path>> swMap = new
-                    HashMap<DeviceId, ArrayList<Path>>();
+            HashMap<DeviceId, ArrayList<Path>> swMap = new HashMap<>();
             for (DeviceId sw : distanceDeviceMap.get(itrIndx)) {
                 swMap.put(sw, getECMPPaths(sw));
             }
@@ -314,12 +312,10 @@
     public HashMap<Integer, HashMap<DeviceId,
             ArrayList<ArrayList<DeviceId>>>> getAllLearnedSwitchesAndVia() {
 
-        HashMap<Integer, HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>>> deviceViaMap =
-                new HashMap<Integer, HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>>>();
+        HashMap<Integer, HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>>> deviceViaMap = new HashMap<>();
 
         for (Integer itrIndx : distanceDeviceMap.keySet()) {
-            HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>> swMap =
-                    new HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>>();
+            HashMap<DeviceId, ArrayList<ArrayList<DeviceId>>> swMap = new HashMap<>();
 
             for (DeviceId sw : distanceDeviceMap.get(itrIndx)) {
                 ArrayList<ArrayList<DeviceId>> swViaArray = new ArrayList<>();