Using JPanel with JFrame

Question

I am using a JFrame to encapsulate my program. I want to have a JPanel inside my JFrame to handle all of my 2d displaying (like fillRect() etc...). I used forte to set this up but I am having problems dispaying on the JPanel. Here is my code:
here is how I call the function from the main .java file
I dubuged this and know it works (proof will come later)
private void Start_ButtonActionPerformed(java.awt.event.ActionEvent evt)
myDisplay.draw();
here is my entire JPanel class
import java.awt.*;
import javax.swing.*;
public class Display extends javax.swing.JPanel
public Display() {
initComponents();
public void paintComponent(Graphics g )
System.out.println("1");
super.paintComponent(g);
g.setColor(Color.black);
g.fillOval(50,10,60,60);
public void draw()
System.out.println("1");
this.repaint(); //i also tried repaint() but it didn't work either
System.out.println("2");
private void initComponents()
setLayout(new java.awt.BorderLayout());
when I press the start button, 1 and 2 are displayed but 3 isn't. For some reason the repaint() function is not telling the paintComponent function to work. Any help is appreciated.
Thanks,
Every_man

Answer 1

Every_man,
After doing the super.paintComponent(g); you must use Graphics2D. So you next line should cast your graphics object to a graphics 2D object, like this. Graphics2D g2 = (Graphics2D)g;