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

*** 4471,4480 ****
--- 4471,4481 ----
      // 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()) {