Regarding Listener

[adeeb alexander]

Hi,
i have a JButton i want to add it the enter key listener i.e when i press enter key then it should perform a task.
Please tell me how can i acheive this.
Thanks and Regards.

[Rob Spoor]

Unfortunately, JButtons only use space for pressing it with the keyboard. You can add a KeyListener to catch all key events and then trigger a click when the button is Enter:

public void keyPressed(KeyEvent e)
{
    // button is a reference to your JButton; possibly a private field set
    // in the constructor of the KeyListener
    if (e.getKeyCode() == KeyEvent.VK_ENTER)
    {
        button.doClick();
    }
}

This will only work if your button has the focus; if it also has to be triggered if other components have the focus you'll need to add the KeyListener to all controls that can catch the event.

[Maneesh Godbole]

Originally posted by adeeb alexander:
..i.e when i press enter key then it should perform a task.

In addition to what Rob said, you can make any single button the default button, without explicitly adding any listeners.
You set it by doing the following:

getRootPane.setDefaultButton(myDefaultButton);

In this scenario, the "myDefaultButton" is clicked even if it does not have focus.