AbstractButtonPropertyChangeListener.java Source code

Introduction

Here is the source code for AbstractButtonPropertyChangeListener.java

Source

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.AbstractButton;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;

class AbstractButtonPropertyChangeListener implements PropertyChangeListener {

    public void propertyChange(PropertyChangeEvent e) {
        String propertyName = e.getPropertyName();
        System.out.println("Property Name: " + propertyName);
        if (e.getPropertyName().equals(AbstractButton.TEXT_CHANGED_PROPERTY)) {
            String newText = (String) e.getNewValue();
            String oldText = (String) e.getOldValue();
            System.out.println(oldText + " changed to " + newText);
        } else if (e.getPropertyName().equals(AbstractButton.ICON_CHANGED_PROPERTY)) {
            Icon icon = (Icon) e.getNewValue();
            if (icon instanceof ImageIcon) {
                System.out.println("New icon is an image");
            }
        }
    }
}

public class AbstractButtonPropertyChangeListenerDemo {

    public static void main(String[] a) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        AbstractButton bn = new JButton("asdf");
        bn.addPropertyChangeListener(new AbstractButtonPropertyChangeListener());

        bn.setText("fdsa");

        frame.add(bn);

        frame.setSize(300, 200);
        frame.setVisible(true);
    }

}