src/share/classes/javax/swing/text/JTextComponent.java

@@ -4471,10 +4471,11 @@
     // Process any input method events that the component itself
     // recognizes. The default on-the-spot handling for input method
     // composed(uncommitted) text is done here after all input
     // method listeners get called for stealing the events.
     //
+    @SuppressWarnings("fallthrough")
     protected void processInputMethodEvent(InputMethodEvent e) {
         // let listeners handle the events
         super.processInputMethodEvent(e);
 
         if (!e.isConsumed()) {