Java by API/java.beans/PropertyChangeListener

implements PropertyChangeListener

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.Random; import javax.swing.JButton; import javax.swing.JFrame; public class MainClass {

 public static void main(String args[]) {
   JFrame frame = new JFrame("Button Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   final JButton button1 = new JButton("Select Me");
   final JButton button2 = new JButton("No Select Me");
   final Random random = new Random();
   ActionListener actionListener = new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       JButton button = (JButton) actionEvent.getSource();
       int red = random.nextInt(255);
       int green = random.nextInt(255);
       int blue = random.nextInt(255);
       button.setBackground(new Color(red, green, blue));
     }
   };
   PropertyChangeListener propertyChangeListener = new PropertyChangeListener() {
     public void propertyChange(PropertyChangeEvent propertyChangeEvent) {
       String property = propertyChangeEvent.getPropertyName();
       if ("background".equals(property)) {
         button2.setBackground((Color) propertyChangeEvent.getNewValue());
       }
     }
   };
   button1.addActionListener(actionListener);
   button1.addPropertyChangeListener(propertyChangeListener);
   button2.addActionListener(actionListener);
   frame.add(button1, BorderLayout.NORTH);
   frame.add(button2, BorderLayout.SOUTH);
   frame.setSize(300, 100);
   frame.setVisible(true);
 }

}

      </source>