implement grid in java.awt - cells span multiple columns

Posted on 2007-12-06
Last Modified: 2013-11-23

I need to create a grid like component in java.awt (not using Swing) where cells span multiple rows.
Has anyone done this?

Question by:SAJC
  • 3
  • 3
LVL 92

Expert Comment

ID: 20418105
not that i'm aware of , not much is done using straigt awt these days.
LVL 13

Expert Comment

by:Bart Cremers
ID: 20418452
You can get far by using a GridBagLayout:
 * Copyright (c) 2007, Your Corporation. All Rights Reserved.
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
 * @author Bart Cremers
 * @since 6-dec-2007
public class GridExample extends Panel {
    private static final GridBagConstraints gbc = new GridBagConstraints();
    static {
        gbc.fill = GridBagConstraints.BOTH;
        gbc.weightx = 1.0;
        gbc.weighty = 1.0;
    public GridExample() {
        super(new GridBagLayout());
        add(new BorderedLabel("A"), 1, 1, 1, 1);
        add(new BorderedLabel("B"), 1, 2, 1, 1);
        add(new BorderedLabel("C"), 1, 3, 1, 1);
        add(new BorderedLabel("D"), 1, 4, 1, 1);
        add(new BorderedLabel("E"), 1, 5, 1, 1);
        add(new BorderedLabel("F"), 2, 1, 1, 3);
        add(new BorderedLabel("G"), 2, 4, 1, 1);
        add(new BorderedLabel("H"), 2, 5, 3, 1);
        add(new BorderedLabel("I"), 3, 1, 1, 1);
        add(new BorderedLabel("J"), 3, 2, 2, 2);
        add(new BorderedLabel("K"), 3, 4, 1, 1);
        add(new BorderedLabel("L"), 4, 1, 1, 1);
        add(new BorderedLabel("M"), 4, 4, 1, 1);
        add(new BorderedLabel("N"), 4, 5, 1, 1);
    private void add(Component comp, int row, int col, int rowspan, int colspan) {
        gbc.gridx = col;
        gbc.gridy = row;
        gbc.gridwidth = colspan;
        gbc.gridheight = rowspan;
        add(comp, gbc);
    public static void main(String[] args) {
        final Frame frame = new Frame();
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
        frame.add(new GridExample());
    private static class BorderedLabel extends Label {
        private BorderedLabel(String text) {
            super(text, CENTER);
        public void paint(Graphics g) {
            g.drawRect(0, 0, getWidth() - 1, getHeight() - 1);

Open in new window


Author Comment

ID: 20440795
Thanks for the above Bart, however, my fault, I should have stated I can't use GridBagLayout.
Sorry for late reply.
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

LVL 13

Expert Comment

by:Bart Cremers
ID: 20440818
What's the reason for not being able to use gridbaglayout? It's available in AWT.

Author Comment

ID: 20441120
The reason for not using any of the AWT layouts is that the number of rows and columns are arbitrary.
Will not know these till runtime.

LVL 13

Accepted Solution

Bart Cremers earned 500 total points
ID: 20441232
GridBagLayout doesn't require you to create a grid with fixed rows and colums up front.

You can simply dynamically add new "cells" or remove them.

Author Comment

ID: 20441682
ok, thanks Bart

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Alternative to 23 1,143
error when doin maven update 2 100
Reference external folders in Visual Studio 4 81
Visual Studio 2013 and Eclipse Neon 6 38
Programmer's Notepad is, one of the best free text editing tools available, simply because the developers appear to have second-guessed every weird problem or issue a programmer is likely to run into. One of these problems is selecting and deleti…
How to install Selenium IDE and loops for quick automated testing. Get Selenium IDE from Go to that link and select download selenium in the right hand columnThat will then direct you to their download page.From that page s…
THe viewer will learn how to use NetBeans IDE 8.0 for Windows to perform CRUD operations on a MySql database.
The viewer will learn how to use and create keystrokes in Netbeans IDE 8.0 for Windows.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question