src/java.desktop/macosx/classes/sun/lwawt/LWComponentPeer.java

@@ -928,11 +928,11 @@
                     focusLog.fine("request rejected, parentWindow is null");
                     LWKeyboardFocusManagerPeer.removeLastFocusRequest(getTarget());
                     return false;
                 }
                 final LWWindowPeer parentPeer =
-                        (LWWindowPeer) AWTAccessor.getComponentAccessor()
+                        AWTAccessor.getComponentAccessor()
                                                   .getPeer(parentWindow);
                 if (parentPeer == null) {
                     focusLog.fine("request rejected, parentPeer is null");
                     LWKeyboardFocusManagerPeer.removeLastFocusRequest(getTarget());
                     return false;