src/share/classes/javax/swing/JTextField.java

*** 585,595 ****
              }
              firePropertyChange("action", oldValue, action);
          }
      }
  
!     private boolean isListener(Class c, ActionListener a) {
          boolean isListener = false;
          Object[] listeners = listenerList.getListenerList();
          for (int i = listeners.length-2; i>=0; i-=2) {
              if (listeners[i]==c && listeners[i+1]==a) {
                      isListener=true;
--- 585,595 ----
              }
              firePropertyChange("action", oldValue, action);
          }
      }
  
!     private boolean isListener(Class<?> c, ActionListener a) {
          boolean isListener = false;
          Object[] listeners = listenerList.getListenerList();
          for (int i = listeners.length-2; i>=0; i-=2) {
              if (listeners[i]==c && listeners[i+1]==a) {
                      isListener=true;