//A simple demonstration of button events including Action, Item and Change event types.
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class JButtonEvents {
public static void main(String[] args) {
JButton jb = new JButton("Press Me");
jb.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
System.out.println("ActionEvent!");
}
});
jb.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ev) {
System.out.println("ItemEvent!");
}
});
jb.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent ev) {
System.out.println("ChangeEvent!");
}
});
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(jb);
f.pack();
f.setVisible(true);
}
}