CODEWITHSUNDEEP
javaswingjframejpanel
Patricia6946
Patricia6946

Reputation: 19

JFrame is blank

any ideas what im doing wrong here..im supposed to see 2 rectangles in my JFrame but all i get is a grey box. So no rectangles, colors or nothing responds to my code.

Here is the class with the main method :

import javax.swing.JFrame;
public class Paron {

    public static void main(String[] args) {

      JFrame f = new JFrame("Rektanglar");
      f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      Rektanglar r = new Rektanglar ();
      f.add(r);
     f.setSize(400, 250);
      f.setVisible(true);

    }
}

and here is my JPanel code:

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JPanel;

public class Rektanglar extends JPanel {

    public void PaintComponent (Graphics g) {
       super.paintComponent (g);
       this.setBackground(Color.WHITE);

       g.setColor(Color.BLUE);
       g.fillRect(25,25, 100, 100);
       g.setColor(Color.RED);
       g.fillRect(40,40,100,100);

    }
}

what am i missing? thanks for any help

Upvotes: 2

Views: 300

Answers (2)

Reimeus
Reimeus

Reputation: 159754

It's paintComponent not PaintComponent. Java is case sensitive.

@Override
public void paintComponent(Graphics g) {

Add the @Override annotation to allow the compiler to check for the existence of the method.

Upvotes: 5

BackSlash
BackSlash

Reputation: 22233

public void PaintComponent (Graphics g) {

the p for PaintComponent has to be lowercase:

public void paintComponent (Graphics g) {

Upvotes: 0

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