Action Event Example

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

 

import java.text.DateFormat;

import java.util.Date;

import java.util.Locale;

import javax.swing.DefaultListModel;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

 

public class ActionEventExample extends JFrame implements ActionListener {

 

  private JList list;

  private DefaultListModel model;

 

  public ActionEventExample() {

     

    initUI();

     

  }

 

  public final void initUI() {

 

    JPanel panel = new JPanel();

    panel.setLayout(null);

 

    model = new DefaultListModel();

    list = new JList(model);

    list.setBounds(150, 30, 220, 150);

 

    JButton okButton = new JButton("Ok");

    okButton.setBounds(30, 35, 80, 25);

 

    okButton.addActionListener(this);

 

    panel.add(okButton);

    panel.add(list);

    add(panel);

 

    setTitle("Event Example");

    setSize(420, 250);

    setLocationRelativeTo(null);

    setDefaultCloseOperation(EXIT_ON_CLOSE);

     

  }

 

  public void actionPerformed(ActionEvent e) {

 

    Locale locale = Locale.getDefault();

    Date date = new Date(e.getWhen());

    String s = DateFormat.getTimeInstance(DateFormat.SHORT, locale).format(

        date);

 

    if (!model.isEmpty()) {

      model.clear();

    }

 

    if (e.getID() == ActionEvent.ACTION_PERFORMED) {

      model.addElement(" Event Id: ACTION_PERFORMED");

    }

 

    model.addElement(" Time: " + s);

 

    String source = e.getSource().getClass().getName();

    model.addElement(" Source: " + source);

 

    int mod = e.getModifiers();

 

    StringBuffer buffer = new StringBuffer(" Modifiers: ");

 

    if ((mod & ActionEvent.ALT_MASK) > 0) {

      buffer.append("Alt ");

    }

 

    if ((mod & ActionEvent.SHIFT_MASK) > 0) {

      buffer.append("Shift ");

    }

 

    if ((mod & ActionEvent.META_MASK) > 0) {

      buffer.append("Meta ");

    }

 

    if ((mod & ActionEvent.CTRL_MASK) > 0) {

      buffer.append("Ctrl ");

    }

 

    model.addElement(buffer);

  }

 

  public static void main(String[] args) {

     

    SwingUtilities.invokeLater(new Runnable() {

 

      public void run() {

         

        ActionEventExample ex = new ActionEventExample();

        ex.setVisible(true);

         

      }

    });

  }

}



















OUTPUT