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Thread: I don't know what's wrong

  1. #1
    Junior Member
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    Default I don't know what's wrong

    I'm trying to display an oval but the oval doesn't show.
    This is my code:

    package guitut;
    import javax.swing.*;
    import java.awt.*;
     
    public class GUItut {
    static int x = 50;
    static int y = 50;
      private static class BallAnimate extends JPanel {
          public void paintComponent(Graphics g)
          { super.paintComponent(g);
          g.drawOval(x, y, 50, 100);
     
      }
    }
        public static void main(String[] args) {
          BallAnimate displayPanel = new BallAnimate();
           JPanel content = new JPanel();
           content.add(displayPanel);
     
          JFrame window = new JFrame();
       window.setContentPane(content);
          window.setSize(400,400);
          window.setVisible(true);
        }
    }


  2. #2
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    Default Re: I don't know what's wrong

    What happens when you resize the GUI?
    Improving the world one idiot at a time!

  3. #3
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    Default Re: I don't know what's wrong

    First of all...you must add your content do "window". second, if you put into panel another panel you need to set LayoutManager

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  5. #4
    Super Moderator Norm's Avatar
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    Default Re: I don't know what's wrong

    For debugging these kinds of problems I set the colors of the different components to see where and if they are showing up.
    Try adding this after you create the object:

    displayPanel.setBackground(Color.yellow);

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