Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.event.ContainerEvent;
import java.awt.event.ContainerListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main {

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

        JPanel buttonPanel = new JPanel(true);
        buttonPanel.addContainerListener(new ContainerListener() {
            public void componentAdded(ContainerEvent e) {
                displayMessage(" added to ", e);
            }

            public void componentRemoved(ContainerEvent e) {
                displayMessage(" removed from ", e);
            }

            void displayMessage(String action, ContainerEvent e) {
                System.out.println(((JButton) e.getChild()).getText() + " was" + action
                        + e.getContainer().getClass().getName());
            }
        });
        buttonPanel.add(new JButton("A"));

        frame.add(buttonPanel);

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

}