src/java.desktop/share/classes/sun/awt/KeyboardFocusManagerPeerImpl.java

@@ -140,12 +140,12 @@
         SunToolkit.postEvent(SunToolkit.targetToAppContext(lightweightChild), fg);
         return true;
     }
 
     // WARNING: Don't call it on the Toolkit thread.
-    public static boolean requestFocusFor(Component target, FocusEvent.Cause cause) {
-        return AWTAccessor.getComponentAccessor().requestFocus(target, cause);
+    public static void requestFocusFor(Component target, FocusEvent.Cause cause) {
+        AWTAccessor.getComponentAccessor().requestFocus(target, cause);
     }
 
     // WARNING: Don't call it on the Toolkit thread.
     public static int shouldNativelyFocusHeavyweight(Component heavyweight,
                                                      Component descendant,