addKeyListener to Jpanel

Question

I want to addKeyListener to a JPanel but when I press two keys at the same time, just one of them executes. What is the solution to this problem - press two keys at the same time?

I have a class that extends JPanel

this.addKeyListener(new KeyListener() {

public void keyTyped(KeyEvent e) {}
public void keyReleased(KeyEvent e) {}
public void keyPressed(KeyEvent e) {
    if (e.getKeyCode() == KeyEvent.VK_W) {
            upPlayer2();
    }  if (e.getKeyCode() == KeyEvent.VK_A ){

            leftPlayer2();
        }

}
    });

Thanks.

I know you have tried yourself but could you please show that to us :) so that we can understand that you have tried and have minimal understanding of the problem being solved — Sage, Dec 07 '13 at 17:00
This answer might help you: http://stackoverflow.com/a/753078/1068167 — span, Dec 07 '13 at 17:18
Keyevents are fired one at a time with/without masks (alt, ctrl, etc). Your code will not work, e is one event it cannot possibly be another event in the same call to keyTyped. — arynaq, Dec 07 '13 at 17:21

score 1 · Accepted Answer · answered Dec 07 '13 at 17:32

1

Don't use a KeyListener. Swing was designed to be used with Key Bindings.

See Motion Using the Keyboard for more information and solutions.

answered Dec 07 '13 at 17:32

camickr

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addKeyListener to Jpanel

1 Answers1