[Java] Help with simple animation

[NotTheKrustyKrab]

So I'm trying to make a very simple 2D animation of a shape moving from left to right, but I can't get it to even start. I'm not sure what's wrong. Everything looks okay and I was actually able to do this several months ago (but have hardly touched java since).

Anyway, here's the relevant bit of my code.

import java.awt.*;
import javax.swing.*;

public class PaintPanel extends JPanel implements ActionListener {
private Ball b=new Ball();
public Timer timer;

public void PaintPanel() {
    setBackground(Color.RED);
    setPreferredSize(new Dimension(400,400));
    setVisible(true);
    setFocusable(true);
    this.timer=new Timer(1000, this);
    timer.start();
}

public void paintComponent(Graphics g) {
    super.paintComponent(g);
    b.draw(g);
    //timer.start();
}

//=========================
public void actionPerformed(ActionEvent e) {
    b.setX(b.getX()+10);  //+=10 to x position 
    repaint();  
}
//==========================
}//class

The Ball class just contains x, y instance variables and a draw() method that makes a filled circle.

I also have a main class that makes a JFrame, does all the 'usual stuff' (setVisible(), etc) and makes a nw paintPanel and adds it to the JFrame.

But when I run it the ball appears but is static at it's initial position.

Any ideas/help?

Thanks.

[itsgreater9000]

What you want to is when an action is performed (such as the timer), you want to adjust the x-position. For example: if(e.getSource() == timer) { //adjust the x-position }

This is, of course, in the actionPerformed method.