How to override action for backspace

Question

Hi all,
I have a a Jtextfield in which backspace should not work.
I am not able to achieve this with the statements
// dateText is my textfield
dateText.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_BACK_SPACE,0),
"noAction");
dateText.getActionMap().put("noAction",
doNothing);
Action doNothing = new AbstractAction() {
public void actionPerformed(ActionEvent e) {
//do nothing
pls tell me where the problem is??
I haven't added key listener to my textfield...
pls solve this..

Answer 1

Hello,
I'm not sure how to prevent deleting with an action, but overriding PlainDocument's remove-Method is another solution:
for example:import javax.swing.*;
import javax.swing.text.*;
public class Test extends JFrame
     public static void main(String[] args){new Test();}
     private JTextField tf=new JTextField(10);
     Test()
          setDefaultCloseOperation(EXIT_ON_CLOSE);
          setBounds(300,300,300,300);
          JPanel mainPanel=new JPanel();
          tf.setDocument(new PlainDocument(){
               public void remove(int offs, int len){
                    //Do nothing
          mainPanel.add(tf);
          setContentPane(mainPanel);
          setVisible(true);
}regards,
Tim