KeyListener Q:

Question

Here is my code:
package Pong;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JPanel;
* @author Michael Dean
public class Pong extends JPanel {
    private int xPos;
    private int yPos;
    private int xPosTwo;
    private int yPosTwo;
    private int xHeight;
    private int xWidth;
    public Pong() {
        xPos = 10;
        yPos = 150;
        xPosTwo = 350;
        yPosTwo = 150;
        xHeight = 20;
        xWidth = 60;
    public void yUp(int pos) {
        if (yPos <= 10) {
        } else {
            yPos -= pos;
    public void yDown(int pos) {
        if (yPos >= 290) {
        } else {
            yPos += pos;
    public void yUpTwo(int pos) {
        if (yPosTwo <= 10) {
        } else {
            yPosTwo -= pos;
    public void yDownTwo(int pos) {
        if (yPosTwo >= 290) {
        } else {
            yPosTwo += pos;
    @Override
    public void paintComponent(Graphics g) {
        Graphics2D g1 = (Graphics2D) g;
        super.paintComponent(g);
        g1.setColor(Color.RED);
        g1.fillRect(xPos, yPos, xHeight, xWidth);
        g1.setColor(Color.BLUE);
        g1.fillRect(xPosTwo, yPosTwo, xHeight, xWidth);
        g1.setColor(Color.WHITE);
        g1.fillOval(190, 175, 20, 20);
package PongGUI;
import Pong.Pong;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class PongGUI extends JFrame implements KeyListener {
    Pong canvas = new Pong();
    public static void main(String[] args) {
        new PongGUI();
    public PongGUI() {
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container c = getContentPane();
        c.add(canvas);
        setSize(395, 395);
        addKeyListener(this);
        setVisible(true);
        setResizable(false);
        canvas.setBackground(Color.BLACK);
    public void keyTyped(KeyEvent e) {
        e.consume();
    public void keyPressed(KeyEvent e) {
        int key = e.getKeyCode();
        if (key == KeyEvent.VK_S) {
            canvas.yDown(10); //down
            canvas.repaint();
        if (key == KeyEvent.VK_W) {
            canvas.yUp(10); //up
            canvas.repaint();
        if (key == KeyEvent.VK_O) {
            canvas.yUpTwo(10); //up
            canvas.repaint();
        if (key == KeyEvent.VK_L) {
            canvas.yDownTwo(10); //down
            canvas.repaint();
        } else {
            e.consume();
    public void keyReleased(KeyEvent e) {
        e.consume();
}My question is how i would make my two paddels (this is a simple pong game or in the making) move simultaneously (one paddel up+down same time other paddel up+down), if anyone can give me coded examples, i have been told that KeyBinding will fix this problem but i cannot figure out how to implement it, any help will be great.
Edited by: MichaelDean on Oct 9, 2008 1:43 PM

Answer 1

h1. Please do not cross-post.
[KeyListener query|http://forums.sun.com/thread.jspa?threadID=5338324]
This will frustrate anyone who tries to help you only to find out later that the same answer was given hours ago in a cross-posted thread. For this reason, many volunteers here and at the other sites refuse to help repeat offenders.
If you don't understand what we are talking about with key bindings in your previous post, then ask, but do it in that post.