// MyGame.java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class MyGame extends JComponent implements KeyListener {
  privates static JFrame frame;
  
  public static void main(String[] args) { 
    MyGame myGame = new MyGame();

    frame = new JFrame("My Game etc.");
    frame.addKeyListener(myGame);
    frame.setSize(640, 480);
    frame.setContentPane(myGame);
    frame.setVisible(true);
  }

  public MyGame() {
     // init JComponent
  }
  
  /* move method that's called on key presses */
  public void move(int dx, int dy) {
    System.out.println("dx = " + dx);
    System.out.println("dy = " + dy);
  }

  public void paintComponent(Graphics g) {
     // do the painting on g context 
  }
  
  /* THE IMPORTANT PART: */
  public void keyPressed(KeyEvent event) {
     switch(event.getKeyCode()) {
        case KeyEvent.VK_UP:
           move(0, -1);
           break;
        case KeyEvent.VK_DOWN:
           move(0, 1);
           break;
        case KeyEvent.VK_RIGHT:
           move(1, 0);
           break;
        case KeyEvent.VK_LEFT:
           move(-1, 0);
           break;
        default:
           break;
     }
   }

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

	public void keyPressed(KeyEvent event) {		switch(event.getKeyCode()) {			case KeyEvent.VK_UP:				// moveBlock(0, -1);				upPressed = true;				break;			case KeyEvent.VK_DOWN:				// moveBlock(0, 1);				downPressed = true;				break;			case KeyEvent.VK_RIGHT:				/// moveBlock(1, 0);				rightPressed = true;				break;			case KeyEvent.VK_LEFT:				// moveBlock(-1, 0);				leftPressed = true;				break;			case KeyEvent.VK_SPACE:			default:				break;		}		if(upPressed) {			moveBlock(0, -1);		}		if(downPressed) {			moveBlock(0, 1);		}		if(rightPressed) {			moveBlock(1, 0);		}		if(leftPressed) {			moveBlock(-1, 0);		}	}	public void keyTyped(KeyEvent event) {}	public void keyReleased(KeyEvent event) {		switch(event.getKeyCode()) {			case KeyEvent.VK_UP:				upPressed = false;				break;			case KeyEvent.VK_DOWN:				downPressed = false;				break;			case KeyEvent.VK_RIGHT:				rightPressed = false;				break;			case KeyEvent.VK_LEFT:				leftPressed = false;				break;			default:				break;		}	}