Password textfield with no display

Question

Hi,
I have to design a textfield for password in such a way that it doesn't show anything when the user types the password (similar to solaris login screen). I was trying with setEchoChar method but it seems that it doesnt work for blank string (""). Any suggestions..?
Thanks
Akhil

Answer 1

The cheapest way not to display text is to set the Foreground Color to
the Background Color.
TextField passField = new TextField();
passField.setBackground(Color.white); //default
passField.setForeground(Color.white);This however is not a good solution, because as soon as you select the text it's visible.
But, in conjunction with a KeyListener it could be a cleaner solution:
'A global to hold the Value
String passValue=new String("");
'Create the TextField
TextField passField=new TextField;
passField.setBackground(Color.black);
passField.setForeground(Color.black);
passField.addKeyListener(new PasswordKeyListener());
'Internal class
class PasswordKeyListener implements KeyListener {
    public void keyPressed(KeyEvent ke) {
      passField.setText("");
    public void keyReleased(KeyEvent ke) {
      passField.setText("");
    public void keyTyped(KeyEvent ke) {
      passField.setText("");
      passValue+=ke.getKeyChar();
      System.out.println(passValue);
  }