Added private constructor to utility class

git-svn-id: https://svn.apache.org/repos/asf/directmemory/lightning/trunk@1407063 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lightning-core/src/main/java/org/apache/directmemory/lightning/internal/instantiator/SerializationInstantiatorHelper.java b/lightning-core/src/main/java/org/apache/directmemory/lightning/internal/instantiator/SerializationInstantiatorHelper.java
index 0abfe24..45513d4 100644
--- a/lightning-core/src/main/java/org/apache/directmemory/lightning/internal/instantiator/SerializationInstantiatorHelper.java
+++ b/lightning-core/src/main/java/org/apache/directmemory/lightning/internal/instantiator/SerializationInstantiatorHelper.java
@@ -25,9 +25,13 @@
  * 
  * @author Leonardo Mesquita
  */
-public class SerializationInstantiatorHelper
+public final class SerializationInstantiatorHelper
 {
 
+    private SerializationInstantiatorHelper()
+    {
+    }
+
     /**
      * Returns the first non-serializable superclass of a given class. According to Java Object Serialization
      * Specification, objects read from a stream are initialized by calling an accessible no-arg constructor from the