KeyListener Issues

[xael]

hello, I have a class for a 3D camera that I would like to be able to move and rotate in 3D by use of keyboard input. I've implemented KeyListener, added such a listener in my constructor, but no matter what I put in the KeyPressed() KeyReleased() or KeyTyped() methods, nothing changes... can't even get a line of output.
Here's the relevant part of my class:

import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.awt.event.*;
import java.awt.Event.*;
public  class camera extends JPanel implements KeyListener{

 public camera()
    {this.addKeyListener(this);}
 // most of class omitted as irrelevant


public void test()
    {System.out.println("you got key input");}


  public void keyPressed(KeyEvent e) {
		test();
	}

	public void keyReleased(KeyEvent e) {
          test();
	}

	public void keyTyped(KeyEvent e) {
          test();
	}
}

Any ideas on what I can do to simply call the test() method? If I can do that then I can do the rest. Any thoughts appreciatd

[pbrockway2]

The Camera (better name) component has to be focussable and have focus in order to recieve keyboard input.

The Component API docs include a link to the How to Use the Focus Subsystem in Oracle's Tutorial which includes a paragraph near the start on how to ensure that a particular component gains the focus the first time a window is activated.

If you get stuck post a runnable example of the problem.

[xael]

Ok, this is a camera class I developed myself, it is not related to any api... but that doesn't matter any ways; I was asking if there is anything wrong in the above code that prevents even a basic output from being called when a key is pressed.

[pbrockway2]

I was asking if there is anything wrong in the above code that prevents even a basic output from being called when a key is pressed

My mistake then. I had assumed you were asking for "ideas on what I can do to simply call the test() method" in response to key strokes.

You can rest assured that there is nothing in the code you posted that prevents output (basic or complex) from being performed in response to a key press.

[xael]

OK... got it so it keyboard input working so long as it extends JFrame

[Fubarable]

OK... got it so it keyboard input working so long as it extends JFrame

Huh? I don't see anyone mentioning anything about JFrame in the replies above.