KeyMover

import acm.program.*;
import acm.graphics.*;
 
import java.awt.event.*;
 
public class KeyMover extends GraphicsProgram {
	private GOval theCircle;
 
	public void keyPressed(KeyEvent e) {
		if (e.getKeyCode() == KeyEvent.VK_W) {
			theCircle.move(0, -10);
		} else if (e.getKeyCode() == KeyEvent.VK_S) {
			theCircle.move(0, 10);
		} else if (e.getKeyCode() == KeyEvent.VK_A) {
			theCircle.move(-10, 0);
		} else if (e.getKeyCode() == KeyEvent.VK_D) {
			theCircle.move(10, 0);
		}
	}
 
	public void run() {
		theCircle = new GOval(150,150);
		this.add(theCircle,100,100);
		addKeyListeners();
	}
 
	public static void main(String[] args) {
		String[] newArgs = new String[args.length + 1];
		System.arraycopy(args, 0, newArgs, 0, args.length);
		newArgs[args.length] = "code=" + new SecurityManager(){
			public String className() {
				return this.getClassContext()[1].getCanonicalName();
			}
		}.className();
		GraphicsProgram.main(newArgs);
	}
}