src/macosx/classes/sun/lwawt/macosx/LWCToolkit.java

@@ -645,10 +645,19 @@
     @Override
     public int getFocusAcceleratorKeyMask() {
         return InputEvent.CTRL_MASK | InputEvent.ALT_MASK;
     }
 
+    /**
+     * Tests whether specified key modifiers mask can be used to enter a printable
+     * character.
+     */
+    @Override
+    public boolean isPrintableCharacterModifiersMask(int mods) {
+        return ((mods & (InputEvent.META_MASK | InputEvent.CTRL_MASK)) == 0);
+    }
+
     // Extends PeerEvent because we want to pass long an ObjC mediator object and because we want these events to be posted early
     // Typically, rather than relying on the notifier to call notifyAll(), we use the mediator to stop the runloop
     public static class CPeerEvent extends PeerEvent {
         private long _mediator = 0;