The graphic of Java2D is too small

Question

Dear all,
I dunno why, but my graphic is always very very small,
no matter how big I change the x and y of Point2D[]...
the Line2D of (0, 0) to (0, 10) is the same as (0, 0) to (0, 1000)
Should I set some Renderer for Graphic2D g2??
or use some setBlah Blah method for JPanel??
Please help,
George

Answer 1

Ok, thanks :)
public class Xxxx extends JPanel
    private AbstractPainter painter;
    private Point2D[] points;
    public Xxxx() {
        this.setPainter(new LinePainter());
    public void setPainter(AbstractPainter painter) {
     this.painter = painter;
     int n = painter.getPointCount();
     points = new Point2D[n];
     repaint();
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.draw(painter.drawShape(points));
public class LinePainter extends AbstractPainter
    public LinePainter() {
     uper(2);
    public Shape drawShape(Point2D[] p) {
        return new Line2D.Float(p[0], p[1]);
}