Handling an action listener : ActionListener « Swing Event « Java Tutorial

1. Java Tutorial
2. Swing Event
3. ActionListener

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

class MyActionListener implements ActionListener {
  public void actionPerformed(ActionEvent e) {
    JButton source = (JButton) e.getSource();
    String buttonText = source.getText();
    JOptionPane.showMessageDialog(null, "You clicked" + buttonText);
  }
}

public class ActionListenerTest1 {

  public static void main(String[] args) {
    JFrame.setDefaultLookAndFeelDecorated(true);
    JDialog.setDefaultLookAndFeelDecorated(true);
    JFrame frame = new JFrame("ActionListener Test 1");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button = new JButton("Register");
    button.addActionListener(new MyActionListener());
    frame.getContentPane().add(button);
    frame.pack();
    frame.setVisible(true);
  }
}

15.5.ActionListener
	15.5.1.	implements ActionListener and action class level variable
	15.5.2.	Handling an action listener
	15.5.3.	Check the event source in actionPerformed method
	15.5.4.	Use an Inner Class to handle the event
	15.5.5.	Use one inner class to handle events from two buttons
	15.5.6.	Get event source from ActionEvent
	15.5.7.	Add action listener to JTextField
	15.5.8.	ComboBox with ActionListener
	15.5.9.	ActionEvent.getActionCommand()
	15.5.10.	Using an inner ActionListener class.