Fixed some javadoc warning/errors.
Fixed NPE error in objective tracker.
Preparing for upgrade to Java 8 and Karaf 3.0.2.
diff --git a/core/net/src/main/java/org/onlab/onos/net/intent/impl/ObjectiveTracker.java b/core/net/src/main/java/org/onlab/onos/net/intent/impl/ObjectiveTracker.java
index d080b72..53b1239 100644
--- a/core/net/src/main/java/org/onlab/onos/net/intent/impl/ObjectiveTracker.java
+++ b/core/net/src/main/java/org/onlab/onos/net/intent/impl/ObjectiveTracker.java
@@ -135,6 +135,11 @@
 
         @Override
         public void run() {
+            // If there is no delegate, why bother? Just bail.
+            if (delegate == null) {
+                return;
+            }
+
             if (event.reasons() == null) {
                 delegate.triggerCompile(new HashSet<IntentId>(), true);