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[java] Keyboard question

Started by Stompy9999 Sep 18, 2005 at 4:37 PM 1 replies 1.2k views

Original Post

Sep 18, 2005 at 4:37 PM

Got another noob Java question for you guys that I couldn't seem to find on google. I'm currently reading this tutorial on keyboard input. Well, I realize that if I implement an Interface, in this case KeyListener, I have to also implement all of its methods, which I do. I've implemented them as such:


public void keyPressed(KeyEvent e)
{
	switch(e.getKeyCode())
	{
		case KeyEvent.VK_RIGHT:
		   player.moveRight();
		   break;
		case KeyEvent.VK_LEFT:
		   player.moveLeft();
		   break;
	}
}
	
public void keyReleased() {}
public void keyTyped() {}

when I compile it, I get this error:

Quote:
Atlas is not abstract and does not override abstract method keyReleased(java.awt.event.KeyEvent) in java.awt.event.KeyListener

I'm not exactly sure what this means cause I get this error whether I override keyRelease or not. EDIT: By the way, Atlas is the name of my main class

H_o_p_s

Sep 18, 2005 at 4:56 PM

I think if you Change

public void keyReleased() {}
public void keyTyped() {}

to

public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {}

that it should work...

-edit-
You could also do something like:

import	java.awt.event.KeyListener;import	java.awt.event.KeyEvent;public class Keyboard implements Keylistener {	boolean[] kp; //Keys pressed	public Keyboard() {		kp = new boolean[256];		for(int i = 0; i < 256; i++) {			kp = false;		}		//MainWindow.addKeyListener(this);//Add this to the window	}	public boolean isPressed(int keyCode) {		return kp[keyCode];	}	public void keyPressed(KeyEvent e)  {		kp[e.getKeyCode()] = true;	}	public void keyReleased(KeyEvent e) {		kp[e.getKeyCode()] = false;	}	public void keyTyped(KeyEvent e)    {}}

And then have an update() that goes something like:

public void update() {
if (Keyboard.isPressed(KeyEvent.VK_DOWN))
//DO STUFF
}

Hope this helps...

Stompy9999

Sep 18, 2005 at 6:11 PM

Yep that worked, thanks!

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