Need a runnable Java Application

I'm in need of a small, short and sweet Java application that will show a window form with a button and when I click on the button it will paint a message on the window. I think it should be something like class MyForm extends Frame implements Runnable but I'm not sure but it needs to run in a Thread.

Does anyone know if there is something similar to this around here or can someone just give me a simple example.

Thanks in advance.

I hope this helps:

Code:

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import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;

public class MyFrame extends JFrame {

    private JButton btnPaint;

    public MyFrame() {
        btnPaint = new JButton("Paint");
        btnPaint.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                Thread th = new Thread(new Runnable() {
                    public void run() {
                        getGraphics().drawString("My String", 50, 100);
                    }
                });
                th.start();
            }
        });
        this.add(btnPaint, BorderLayout.NORTH);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(200, 200);
        this.setVisible(true);
    }

    public static void main(String[] args) {
        new MyFrame();
    }
}

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