Paint component scope issues

Question

hi i have 2 classes one is my main and the other is the paint class with void paintcomponent() inside
how do i pass the x variable inside main class so i can use it inside the Map class
i know you can use scope e.g. Map map = new Map(x,y); but then i have to use a constructor with
its own repaint(); method inside but it does not work.
i was thinking of overloading a constructor aswell so inside one constructor is nothing and in the other with the (x, y) has
the repaint method inside but that doesn't work either.
main class
public class Main
public static void main(String[] args) {
MainFrame frame = new MainFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
frame.setVisible(true);
class MainFrame extends JFrame
private int x;
private int y;
// map class with paint component
Map map = new Map(x,y);
public MainFrame(){
this.add(map);
}paint class
public class Map extends JPanel {
private int x;
private int y;
public Map(){}
public Map(int x, int y){
this.x = x;
this.y = y;
repaint();
    @Override
    public void paintComponent(Graphics g){
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D)g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
}this does not work, any ideas?
Edited by: nicchick on Nov 25, 2008 1:00 AM

Answer 1

um that wasnt exactly what i was looking for i have a better example
what im trying to do is pass/scope private varibles from the main class to the map class
but since you use repaint(); to call the paintcomponent override method theres no way to scope varibles like
x and y to panel?
this example shows what im trying to do with a mouselistener
main
public class Main
public static void main(String[] args) {
MainFrame frame = new MainFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
frame.setVisible(true);
class MainFrame extends JFrame
private int x;
private int y;
// map class with paint component
Map map = new Map();
// handler
HandlerMotion handler = new HandlerMotion();
public MainFrame(){
this.add(map);
map.addMouseMotionListener(handler);
     private class HandlerMotion implements MouseMotionListener
        public void mouseDragged(MouseEvent e) {
        public void mouseMoved(MouseEvent e) {
        x = e.getX();
        y = e.getY();
        new Map(x,y);
        repaint();
}map
public class Map extends JPanel {
    private int x;
    private int y;
    public Map(){}
    public Map(int x, int y)
    this.x = x;
    this.y = y;
    System.out.println("this is map" + x);
    System.out.println("this is map" + y);
    repaint();
    @Override
    public void paintComponent(Graphics g){
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D)g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2.drawLine(0, 0, x, y);
    System.out.println("this is panel" + x);
    System.out.println("this is panel" + y);
}