--- old/src/solaris/classes/sun/awt/X11/XToolkit.java	2009-10-14 17:50:50.000000000 +0400
+++ new/src/solaris/classes/sun/awt/X11/XToolkit.java	2009-10-14 17:50:49.000000000 +0400
@@ -341,6 +341,7 @@
     }
 
     static native String getEnv(String key);
+    static native boolean unsetEnv(String key);
 
 
     static String getAWTAppClassName() {