With this tutorial we are going to show you how to create several items with the same ActionListener. This is very useful when you want a number of components to behave in the same way under the occurrence of certain events.
It’s very easy to add this kind of functionality in your Application. You simply:
- Create the items you want
- Create a class that implements
ActionListenerinterface and override theactionPerfomedmethod. - And then just use the
addActionListenermethod of each component to bundle them with theActionListeneryou’ve created.
Let’s take a look at the code:
package com.javacodegeeks.snippets.desktop;
import java.awt.Button;
import java.awt.Frame;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class ReuseListener extends Frame {
public ReuseListener() {
Button button = new Button("Open");
add(button);
MenuBar menuBar = new MenuBar();
setMenuBar(menuBar);
Menu menu = new Menu("Menu");
menuBar.add(menu);
MenuItem menuItem = new MenuItem("Open");
menu.add(menuItem);
ActionListener saver = new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
System.out.println("Opening...");
}
};
// Register the actionListener with button
button.addActionListener(saver);
// And now register the same actionListener with menuItem
menuItem.addActionListener(saver);
pack();
}
private static void showUi() {
ReuseListener reuseListener = new ReuseListener();
reuseListener.setVisible(true);
}
public static void main(String[] a) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
showUi();
}
});
}
}
This was an example now how to create Items with the same ActionListener in Java.
