Adding JPanel to JFrame

[megusta]

Hello there

I'm creating a calculator, but I'm stuck at the GUI. My problem is, i want to add the JPanel "Buttons" to the JFrame in the class "Panel".
The thought was, that "Buttons" would represent a 3x3 matrix of buttons.
"Buttons" should then be added to "Panel" together with "textWindow" in a borderLayout. The GUI is not working the way i want it to, and is not displaying anything.

Class Panel

package gui;
 
import java.awt.BorderLayout;
 
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
 
public final class Panel 
extends JFrame {
 
	private static final long serialVersionUID = 1L;
 
	public static final Panel frame = new Panel();
 
 
 
	public Panel() {
		super();
		setTitle("Calculator");
		setLayout(new BorderLayout()); 
		this.setJMenuBar(null);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setContentPane(new MainPanel());
		this.setVisible(true);
 
		this.pack();
		this.setLocationRelativeTo(null);
	}
 
	private class MainPanel
	extends JPanel {
 
		private static final long serialVersionUID = 1L;
 
		public MainPanel() {
			super(new BorderLayout());
 
			JTextField text = new JTextField(10);
			JPanel textWindow = new JPanel();
			textWindow.add(text);
 
			this.add(textWindow, BorderLayout.NORTH);
			this.add(Buttons.panel, BorderLayout.SOUTH);
 
 
 
		}
 
	}
 
}

Class Buttons

package gui;
 
 
import java.awt.GridLayout;
 
import javax.swing.JPanel;
import javax.swing.JButton;
 
 
public class Buttons 
extends JPanel {
 
	private static final long serialVersionUID = 1L;
 
	public static final Buttons panel = new Buttons();
 
 
	public Buttons() {
 
		super(new GridLayout(3,3));
		this.add(new JButton("1"));
		this.add(new JButton("2"));
		this.add(new JButton("3"));
		this.add(new JButton("4"));
		this.add(new JButton("5"));
		this.add(new JButton("6"));
		this.add(new JButton("7"));
		this.add(new JButton("8"));
		this.add(new JButton("9"));
 
	}
 
}

Class Main

import gui.Panel;
 
public class Main {
 
	public static void main (String [] _) {
		new Panel();
	}
 
}

[/CODE]

[Norm]

I see two JFrame objects being created. Where is the stuff you want to see?

[megusta]

I see two JFrame objects being created. Where is the stuff you want to see?

I want to see a frame with 9 buttons and 1 textfield. How do you see 2 JFrames beeing created, i see only one?
Are you refering to "Panel" where i extend with JFrame?

What in my code do i have to change in order to get this to work?

[Norm]

I see that you have changed the code posted in post#1. You should tell us when you do that by adding some comments describing what you have done.

If Panel extends JFrame then you don't need the frame variable. Use the Panel class to hold and display the GUI.

There is the same problem with the Buttons class: two JPanels, one in the class and the other with the panel variable.

[theo75]

Keep in mind that you will also need an ActionListener for each button.

[Motion]

check out this calculator...if thats what you wanna do

>>>> Code removed   Please don't spoonfeed code

[Norm]

@Motion Please don't do OPs work for them.
See: http://www.javaprogrammingforums.com...n-feeding.html