How do I have multiple key inputs Listened to at the same time

Question

I\'m attempting to create a simple pong game in Java, but I don\'t know how to have both players using the keyboard at the same time. The game is incomplete and I\'m working on

Answer 1

Don't use a KeyListener. You should be using Key Bindings.

See Motion Using the Keyboard for more information.

I added the following code to the KeyboardAnimation example from the above link, which will allow you to do what you want:

JLabel label2 = new JLabel( new ColorIcon(Color.GREEN, 40, 40) );
label2.setSize( label2.getPreferredSize() );
label2.setLocation(500, 500);
contentPane.add( label2 );

KeyboardAnimation animation2 = new KeyboardAnimation(label2, 24);
animation2.addAction("A", -3,  0);
animation2.addAction("D", 3,  0);
animation2.addAction("W",    0, -3);
animation2.addAction("S",  0,  3);