Don't use Boolean constructor

Change-Id: I962e1aed5d9acc3f141bf14a64c0a5af3aa6f4e7
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionalSet.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionalSet.java
index a885eb6..494445e 100644
--- a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionalSet.java
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultTransactionalSet.java
@@ -32,7 +32,7 @@
     private TransactionalMap<E, Boolean> map;
 
     // dummy value to associate with an Object in the backing map
-    private static final Boolean PRESENT = new Boolean(true);
+    private static final Boolean PRESENT = Boolean.TRUE;
 
     public DefaultTransactionalSet(
             String name,