diff -r c47c078f91b8 -r 3e009b5be123 jdk/src/macosx/native/sun/awt/CWrapper.m
--- a/jdk/src/macosx/native/sun/awt/CWrapper.m	Tue Feb 19 22:23:34 2013 -0800
+++ b/jdk/src/macosx/native/sun/awt/CWrapper.m	Wed Mar 27 16:37:00 2013 +0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2013, 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
@@ -669,6 +669,27 @@
     JNF_COCOA_EXIT(env);
 }
 
+/*
+ * Class:     sun_lwawt_macosx_CWrapper$NSView
+ * Method:    setToolTip
+ * Signature: (JLjava/lang/String;)V
+ */
+JNIEXPORT void JNICALL
+Java_sun_lwawt_macosx_CWrapper_00024NSView_setToolTip
+(JNIEnv *env, jclass cls, jlong viewPtr, jstring msg)
+{
+
+JNF_COCOA_ENTER(env);
+
+    NSView *view = (NSView *)jlong_to_ptr(viewPtr);
+    NSString* s = JNFJavaToNSString(env, msg); 
+    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
+        [view setToolTip: s];
+    }];
+
+JNF_COCOA_EXIT(env);
+}
+
 
 /*
  * Class:     sun_lwawt_macosx_CWrapper$NSScreen
@@ -735,7 +756,7 @@
 {
     __block jlong screenPtr = 0L;
 
-JNF_COCOA_ENTER(env);
+JNF_COCOA_ENTER(env); 
 
     [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
         NSArray *screens = [NSScreen screens];