import java.awt.*;
import java.awt.event.*;
public class MyBall2{
public static void main(String[] args){
Frame w = new Frame();
w.setSize(300, 400);
MyPanel mp = new MyPanel();
w.add(mp);
w.addKeyListener(mp);
mp.addKeyListener(mp);
w.show();
}
}
class MyPanel extends Panel implements KeyListener{
int x = 30;
int y = 30;
public void paint(Graphics g){
g.fillOval(x, y, 20, 20);
}
@Override
public void keyPressed(KeyEvent arg0){
if(arg0.getKeyCode() == 37){
x--;
}
if(arg0.getKeyCode() == 38){
y--;
}
if(arg0.getKeyCode() == 39){
x++;
}
if(arg0.getKeyCode() == 40){
y++;
}
repaint();
}
@Override
public void keyReleased(KeyEvent arg0){
}
@Override
public void keyTyped(KeyEvent arg0){
}
}
