GridBagLayout

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class LayoutGridBag extends JApplet implements ActionListener
{
  JButton buttonOne = new JButton("Button 1");
  JButton buttonTwo = new JButton("Button 2");
  JButton buttonThree = new JButton("Button 3");
  JButton buttonFour = new JButton("Button 4");
  JButton buttonFive = new JButton("Button 5");

  JLabel iSawThat = new JLabel("Press a Button");

  GridBagConstraints gbc;
  Insets i = new Insets(0,0,0,0);

  public void init()
  {
    GridBagLayout gbl = new GridBagLayout();

//  GridBagConstraints(int gridx, int gridy, int gridwidth, int gridheight,
//    double weightx, double weighty, int anchor, int fill, Insets insets,
//    int ipadx, int ipady);

    gbc = new GridBagConstraints(0,0,1,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(buttonOne, gbc);
    gbc = new GridBagConstraints(1,0,1,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(buttonTwo, gbc);
    gbc = new GridBagConstraints(0,1,1,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(buttonThree, gbc);
    gbc = new GridBagConstraints(1,1,1,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(buttonFour, gbc);
    gbc = new GridBagConstraints(0,2,1,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(buttonFive, gbc);
    gbc = new GridBagConstraints(0,3,2,1,0.0,0.0,gbc.WEST,gbc.NONE,i,0,0);
    gbl.setConstraints(iSawThat, gbc);

    Container con = getContentPane();
    con.setLayout(gbl);
    con.add(buttonOne);
    con.add(buttonTwo);
    con.add(buttonThree);
    con.add(buttonFour);
    con.add(buttonFive);
    con.add(iSawThat);

    buttonOne.addActionListener(this);
    buttonTwo.addActionListener(this);
    buttonThree.addActionListener(this);
    buttonFour.addActionListener(this);
    buttonFive.addActionListener(this);
  }

  public void actionPerformed(ActionEvent thisEvent)
  {
    Object source = thisEvent.getSource();

    if(source == buttonOne)
    {
      iSawThat.setText("Button 1 was pressed.");
    }
    else if(source == buttonTwo)
    {
      iSawThat.setText("Button 2 was pressed.");
    }
    else if(source == buttonThree)
    {
      iSawThat.setText("Button 3 was pressed.");
    }
    else if(source == buttonFour)
    {
      iSawThat.setText("Button 4 was pressed.");
    }
    else if(source == buttonFive)
    {
      iSawThat.setText("Button 5 was pressed.");
    }

    repaint();
  }
}