how to move a rectangle with arrow keys,

for some reason this only works for the right arrow key, and i commented out the code for the left arrow key. how do you edit the paint method in the keyhandler method below? or otherwise, how do you reference the keyhandler event/ keypressed in the paint method up top?

import java.awt.Container;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.KeyEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;


public class BreakOut extends javax.swing.JFrame
{
// constants used to define the game field and bounds
public static final int GAME_WINDOW_HEIGHT = 512;
public static final int GAME_WINDOW_WIDTH = 512;
public static final int GAME_HEIGHT = 440;
public static final int GAME_WIDTH = 440;
private static final int BLOCK_WIDTH=90;
private static final int BLOCK_HEIGHT=50;
private Paddle p;


private KeyHandler kh;

public BreakOut()
{
p=new Paddle(100,Color.RED);
Container container=getContentPane();
container.setBackground(Color.WHITE);
initComponents();
}
public void paint(Graphics g)
{
super.paint(g);
g.setColor(p.getPadColor());

if(p.isVisible())
{
g.fillRect(p.getXLocation(),100,70,20);
}
if(!p.isVisible())
{
g.clearRect(p.getXLocation()-10,100,70,20);
p.setVisibility(true);
repaint();
}





}

public void initComponents()
{
setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
setSize(GAME_WINDOW_WIDTH, GAME_WINDOW_HEIGHT);
setTitle("BreakOut");

}

public static void main(String[] args)
{
BreakOut game = new BreakOut();
game.setVisible(true);
}

public class KeyHandler extends KeyAdapter
{
public void keyPressed(KeyEvent ke)
{

if(ke.getKeyCode()==KeyEvent.VK_RIGHT)
{
p.setVisibility(false);
p.setXLocation(p.getXLocation()+10);
repaint();
}
if(ke.getKeyCode()==KeyEvent.VK_LEFT)
{
//p.setVisibility(false);
//p.setXLocation(p.getXLocation()-10);
//repaint();
}

}

}








import java.awt.Color;
public class Paddle
{
private int xlocation;
private Color padColor;
private boolean isVisible;

public Paddle(int xlocation, Color padColor)
{
this.xlocation=xlocation;
this.padColor=padColor;
this.isVisible=true;
}

public int getXLocation()
{
return this.xlocation;
}

public Color getPadColor()
{
return this.padColor;
}

public void setXLocation(int xlocation)
{
this.xlocation=xlocation;
}
public void setPadColor(Color padColor)
{
this.padColor=padColor;
}
public boolean isVisible()
{
return this.isVisible;
}
public void setVisibility(boolean isVisible)
{
this.isVisible=isVisible;
}

}

• Don't draw directly into the paint method of a JFrame but rather in the paintComponent method of a JPanel or JComponent that is added to the JFraem.
• Don't call repaint() from with a paint or paintComponent method. You're lucky the paint manager is smart enough not to allow this to cause infintie recursion!
• Read the graphics tutorials for more on this.
• Please edit your post to use code tags so that your code is readable. Please see my signature below to see how.
• Use debug statements (println's) in your key handling methods to see what method is called when.
• You're far better off using key bindings and not key listeners for this sort of problem. The tutorial on this can help show you how.

hello jmu2101,
please study the code of the following tutorial The Breakout game. I must say, the code is not state-of-the-art but it shows some useful patterns how to move a rectangle with keys. If you need help, post your questions here.

thanks very much