/* * Copyright (c) 2000 David Flanagan.  All rights reserved. * This code is from the book Java Examples in a Nutshell, 2nd Edition. * It is provided AS-IS, WITHOUT ANY WARRANTY either expressed or implied. * You may study, use, and modify it for any non-commercial purpose. * You may distribute it non-commercially as long as you retain this notice. * For a commercial use license, or to purchase the book (recommended), * visit http://www.davidflanagan.com/javaexamples2. */package com.davidflanagan.examples.gui;import java.awt.*;import javax.swing.*;public class GridLayoutPane extends JPanel {  public GridLayoutPane() {    // Layout components into a grid three columns wide, with the number    // of rows depending on the number of components.  Leave 10 pixels    // of horizontal and vertical space between components    this.setLayout(new GridLayout(0, 3, 10, 10));    // Add some components    for(int i = 1; i <= 12; i++) this.add(new JButton("Button #" + i));  }}