Adding customized JPanel's to a frame

Question

This seems like a very easy solution, but I've been looking around and can't find a way to solve it.
Let's say I have a class like:
public class StickyPerson extends JComponent {
    private int x, y;
     * Set coordinates for the sticky person
     * @param x Position x
     * @param y Position y
    public void setCoordinates(int x, int y) {
        this.x = x;
        this.y = y;
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        g2.drawOval(this.x, this.y, 50, 50);
}and in my main class I do like that:
      StickyPerson aPerson = new StickyPerson();
      aPerson.setCoordinates(90, 100);
      frame.add(aPerson);
      aPerson.setCoordinates(290, 100);
      frame.add(aPerson);The problem I'm dealing with is that only the last StickyPerson object is drawn. I've tested with other shapes as well and got the same result, only the last object is shown.
It's clear that I'm making a mistake somewhere but I can't find where. Any ideas?
Thank you
Edited by: Raisen on Sep 10, 2009 12:00 AM

Answer 1

Thanks for all the replies. After reading more about the layout managers, I found out that in this specific project, I need to set the layout manager to null because I'm going to be dealing with drawings all over my frame.
I've added setBounds and setSize inside the paintComponent method but somehow, whenever I add the component to the frame, the method is never called.
Example:
public class StickyPerson extends JComponent {
    public StickyPerson(JFrame aFrame) {
        super();
        insets = aFrame.getInsets();
    public void paintComponent (Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        GradientPaint redtowhite = new GradientPaint(0,0,Color.GRAY,
                100, 0, Color.WHITE);
        g2.setPaint(redtowhite);
        g2.fill (new Ellipse2D.Double(this.x, this.y, this.w, this.h));
        g2.setColor(Color.BLACK);
        g2.drawString(this.text, this.x+25, this.y+25);
        this.setSize(w, h);
        this.setBounds(10 + this.insets.left, 50 + this.insets.top,
                this.w, this.h);
}and in my main code:
      JFrame frame = new JFrame("Example");
      frame.getContentPane().setLayout(null);
      frame.setSize(550, 400);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      StickyPerson stickyPerson = new StickyPerson(frame);
      stickyPerson.setCoordinates(10, 20, 200, 40);
      stickyPerson.setText("Hello World");
      frame.add(stickyPerson);
code}
I've omitted the other irrelevant methods to shorten the code. I've attached breakpoints inside the paintComponent method but it never reaches it. I've tried to use repaint(), validate(), repack().