I have a simple java gui that I wrote which adds 3 buttons and some
text.  It seems to work, but the buttons seem like they are all
different sizes.  How to I get them to be all the same size.  I tried
setSize(), but that did not seem to work.  My code is below.

  Z.K.

code:

import javax.swing.*;
import java.awt.*;

public class NotHelloWorld
{
   public static void main(String[] args)
   {
       NotHelloWorldFrame frame = new NotHelloWorldFrame();
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.setVisible(true);
   }

}

class NotHelloWorldFrame extends JFrame
{
    public NotHelloWorldFrame()
    {
        setTitle("NotHelloWorld");
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
        NotHelloWorldPanel panel = new NotHelloWorldPanel();
        add(panel);

    }

    public static final int DEFAULT_WIDTH = 300;
    public static final int DEFAULT_HEIGHT = 200;
}

class NotHelloWorldPanel extends JPanel
{

    public NotHelloWorldPanel()
    {
      NotHelloWorldButtonPanel bpanel = new NotHelloWorldButtonPanel();
      add(bpanel);

    }
    public void paintComponent(Graphics g)
    {
       g.drawString("Not a Hello World program", MESSAGE_X, MESSAGE_Y);

    }

    public static final int MESSAGE_X = 75;
    public static final int MESSAGE_Y = 100;

}

class NotHelloWorldButtonPanel extends JPanel
{

  public NotHelloWorldButtonPanel()
  {
     JButton yellowButton = new JButton("Yellow");
     JButton blueButton = new JButton("Blue");
     JButton redButton = new JButton("Red");

      //redButton.setSize(5,10);
     //yellowButton.setSize(5,10);
     //blueButton.setSize(5,10);

     add(yellowButton);
     add(blueButton);
     add(redButton);

  }

}