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
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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.
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

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

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
VS2008 C++ memory leaks and how to fix them 7 212
importing  maven Project 5 345
Oracle TopLink example 3 101
Visual Studio 2015 and Uninstall of Web Essentials 2 1,715
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 connect to a MySQL database. Open Services Panel: Create a new connection using New Connection Wizard: Create a test database called eetutorial: Create a new test tabel called ee…
The viewer will learn how to use and create new code templates in NetBeans IDE 8.0 for Windows.

734 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