Event Handling in Swing

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Event
{
JLabel jlab;
Event()
{
JFrame jfrm = new JFrame("An Event Example");
jfrm.setLayout(new FlowLayout());
jfrm.setSize(220, 90);
jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton jbtnAlpha = new JButton("Alpha");
JButton jbtnBeta = new JButton("Beta");
jbtnAlpha.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
jlab.setText("Alpha was pressed.");
}
});
jbtnBeta.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
jlab.setText("Beta was pressed.");
}
});
jfrm.add(jbtnAlpha);
jfrm.add(jbtnBeta);
jlab = new JLabel("Press a button.");
jfrm.add(jlab);
jfrm.setVisible(true);
}
public static void main(String args[])
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new EventDemo();
}
});
}
}