GridBagLayout panels alignment

Question

I have a little issue with the GridBag Layout Manager. I am trying to display 9 panels like this:

Answer 1

I have tried using BorderLayout to check how it works. But just posting here .. :) This process uses multiple panels inside each other. You can try this approach if this example is comfortable.

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.FlowLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.LineBorder;


public class BorderAndGridBag {
    public static void main(String[] args) {
        Runnable r = new Runnable() {

            @Override
            public void run() {
                new GridWithBorder().createUI();
            }
        };

        EventQueue.invokeLater(r);
    }
}

class GridWithBorder {
    public void createUI() {
        JFrame frame = new JFrame();

        JPanel motherPanel = new JPanel(new BorderLayout());

        JPanel topPanel = new  JPanel();
        topPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel bottomPanel = new JPanel(new BorderLayout());
        bottomPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel topLeftPanel = new JPanel();
        topLeftPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel topRightPanel = new JPanel();
        topRightPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel topMiddlePanel = new JPanel();
        topMiddlePanel.add(new JLabel("Top Middle"));
        topMiddlePanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel bottomLeftPanel = new JPanel();
        bottomLeftPanel.add(new JLabel("Bottom Left"));
        bottomLeftPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel bottomRightPanel = new JPanel();
        bottomRightPanel.add(new JLabel("Bottom Right"));
        bottomRightPanel.setBorder(LineBorder.createBlackLineBorder());

        JPanel topLeftLeft = new JPanel();
        topLeftLeft.add(new JLabel("Top Left"));
        topLeftLeft.setBorder(LineBorder.createBlackLineBorder());


        JPanel topLeftRight = new JPanel(new BorderLayout());

        JPanel topLeftRightTop = new JPanel();
        topLeftRightTop.add(new JLabel("Top Left's Right Top"));
        topLeftRight.setBorder(LineBorder.createBlackLineBorder());

        JPanel topLeftRightBottom = new JPanel();
        topLeftRightBottom.add(new JLabel("Top Left's Right Bottom"));

        JPanel topRightLeft = new JPanel(new BorderLayout());
        topRightLeft.setBorder(LineBorder.createBlackLineBorder());

        JPanel topRightRight = new JPanel();
        topRightRight.add(new JLabel("Top Right Right"));
        topRightRight.setBorder(LineBorder.createBlackLineBorder());

        JPanel topRightLeftTop = new JPanel();
        topRightLeftTop.add(new JLabel("Top Right Left Top"));

        JPanel topRightLeftBottom = new JPanel();
        topRightLeftBottom.add(new JLabel("Top Right Left Bottom"));

        topLeftPanel.add(topLeftLeft, BorderLayout.WEST);

        // Top panel sub alignment.
        topLeftPanel.add(topLeftRight, BorderLayout.EAST);
        topLeftRight.add(topLeftRightTop, BorderLayout.NORTH);
        topLeftRight.add(topLeftRightBottom, BorderLayout.CENTER);


        topRightLeft.add(topRightLeftTop, BorderLayout.NORTH);
        topRightLeft.add(topRightLeftBottom, BorderLayout.SOUTH);
        topRightPanel.add(topRightLeft, BorderLayout.WEST);
        topRightPanel.add(topRightRight, BorderLayout.EAST);

        // Top Panel main alignment.
        topPanel.add(topLeftPanel, BorderLayout.WEST);
        topPanel.add(topMiddlePanel, BorderLayout.CENTER);
        topPanel.add(topRightPanel, BorderLayout.EAST);

        // Bottom Panel main alignment.
        bottomPanel.add(bottomLeftPanel, BorderLayout.WEST);
        bottomPanel.add(bottomRightPanel, BorderLayout.EAST);

        motherPanel.add(topPanel, BorderLayout.NORTH);
        motherPanel.add(bottomPanel, BorderLayout.CENTER);

        frame.add(motherPanel);
        frame.pack();
        frame.setTitle("Layout Manager");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}