Thread: KeyListener is not working

I'm programming a game, but the keyListener doesn't work. Here is the source code:

import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
 
public class InputHandler implements KeyListener{
 
	public InputHandler(Game game) {
		game.addKeyListener(this);
	}
 
	public class Key {
 
		private boolean pressed = false;
 
		public boolean isPressed() {
			return pressed;
		}
 
		public void toggle(boolean isPressed) {
			pressed = isPressed;
 
		}
	}
 
 
	public Key up = new Key();
	public Key down = new Key();
	public Key left = new Key();
	public Key right = new Key();
 
	public void keyPressed(KeyEvent e) {
		toggleKey(e.getKeyCode(),true);
	}
 
	public void keyReleased(KeyEvent e) {
		toggleKey(e.getKeyCode(),false);
	}
 
	public void keyTyped(KeyEvent e) {
 
	}
 
	public void toggleKey(int keyCode, boolean isPressed) {
		if(keyCode == KeyEvent.VK_W){
			up.toggle(isPressed);
			}
		if(keyCode == KeyEvent.VK_S){
			down.toggle(isPressed);
			}
		if(keyCode == KeyEvent.VK_A){
			left.toggle(isPressed);
			}
		if(keyCode == KeyEvent.VK_D){
			right.toggle(isPressed);
			}
	}
 
 
}

and in class Game:
...

public InputHandler input = new InputHandler(this);

...
//in a method, that gets called every gametick:

if(input.up.isPressed()==true){
	System.out.println("up"); //This doesn't work!
}

My Question is: Why will it not say "up", if I press "w" ? Thanks in advance for every aswer

Are the listener methods called? The component needs the focus to receive key events.

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE GOES HERE
[/code]
to get highlighting and preserve formatting.