--- old/test/jdk/com/sun/jndi/dns/EnvTests/GetEnv.java	2020-03-27 15:52:48.000000000 +0800
+++ new/test/jdk/com/sun/jndi/dns/EnvTests/GetEnv.java	2020-03-27 15:52:47.000000000 +0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2020, 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
@@ -53,8 +53,8 @@
 
         Context child = (Context) context().lookup(getKey());
 
-        Hashtable envParent = context().getEnvironment();
-        Hashtable envChild = child.getEnvironment();
+        Hashtable<?,?> envParent = context().getEnvironment();
+        Hashtable<?,?> envChild = child.getEnvironment();
 
         DNSTestUtils.debug(child);
         DNSTestUtils.debug("Parent env: " + envParent);