src/java.desktop/share/classes/javax/swing/plaf/metal/MetalRootPaneUI.java

@@ -896,10 +896,11 @@
         public void mouseExited(MouseEvent ev) {
             Window w = (Window)ev.getSource();
             w.setCursor(lastCursor);
         }
 
+        @SuppressWarnings("deprecation")
         public void mouseClicked(MouseEvent ev) {
             Window w = (Window)ev.getSource();
             Frame f = null;
 
             if (w instanceof Frame) {