/* * Swing version. */import java.awt.*;import java.awt.event.*;import javax.swing.*;public class GridBagWindow extends JFrame {    boolean inAnApplet = true;    final boolean shouldFill = true;    final boolean shouldWeightX = true;         public GridBagWindow() {        JButton button;        Container contentPane = getContentPane();        GridBagLayout gridbag = new GridBagLayout();        GridBagConstraints c = new GridBagConstraints();        contentPane.setLayout(gridbag);        if (shouldFill) {            //natural height, maximum width            c.fill = GridBagConstraints.HORIZONTAL;         }           button = new JButton("Button 1");        if (shouldWeightX) {            c.weightx = 0.5;        }        c.gridx = 0;        c.gridy = 0;        gridbag.setConstraints(button, c);        contentPane.add(button);        button = new JButton("2");        c.gridx = 1;        c.gridy = 0;        gridbag.setConstraints(button, c);        contentPane.add(button);        button = new JButton("Button 3");        c.gridx = 2;        c.gridy = 0;        gridbag.setConstraints(button, c);        contentPane.add(button);        button = new JButton("Long-Named Button 4");        c.ipady = 40;      //make this component tall        c.weightx = 0.0;        c.gridwidth = 3;        c.gridx = 0;        c.gridy = 1;        gridbag.setConstraints(button, c);        contentPane.add(button);        button = new JButton("Button 5");        c.ipady = 0;       //reset to default        c.weighty = 1.0;   //request any extra vertical space        c.anchor = GridBagConstraints.SOUTH; //bottom of space        c.insets = new Insets(10,0,0,0);  //top padding        c.gridx = 1;       //aligned with button 2        c.gridwidth = 2;   //2 columns wide        c.gridy = 2;       //third row        gridbag.setConstraints(button, c);        contentPane.add(button);        addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent e) {                if (inAnApplet) {                    dispose();                } else {                    System.exit(0);                }            }        });    }    public static void main(String args[]) {        GridBagWindow window = new GridBagWindow();        window.inAnApplet = false;        window.setTitle("GridBagLayout");        window.pack();        window.setVisible(true);    }}