diff -r 03f7450aec42 -r 1478c9130534 jdk/src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java
--- a/jdk/src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java	Wed Sep 09 12:39:45 2015 +0300
+++ b/jdk/src/java.base/share/classes/java/net/AbstractPlainDatagramSocketImpl.java	Wed Sep 09 16:33:19 2015 +0300
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -68,7 +68,6 @@
                     return null;
                 }
             });
-        init();
     }
 
     /**
@@ -364,6 +363,5 @@
         return connectDisabled;
     }
 
-    native int dataAvailable();
-    private static native void init();
+    abstract int dataAvailable();
 }