Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.HierarchyEvent;
import java.awt.event.HierarchyListener;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTabbedPane;
import javax.swing.event.AncestorEvent;
import javax.swing.event.AncestorListener;

public class Main {
    JTabbedPane tabbedPane = new JTabbedPane();
    JFrame f = new JFrame();
    JLabel label1 = new JLabel("Tab1");
    JLabel label2 = new JLabel("Tab2");
    JLabel label3 = new JLabel("Tab3");
    JLabel label4 = new JLabel("Tab4");

    public Main() {
        tabbedPane.addTab("Tab1", label1);
        tabbedPane.addTab("Tab2", label2);
        tabbedPane.addTab("Tab3", label3);
        tabbedPane.addTab("Tab4", label4);
        tabbedPane.setTabPlacement(JTabbedPane.TOP);
        tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);

        label1.addAncestorListener(new EventHandler());
        label2.addAncestorListener(new EventHandler());
        label3.addAncestorListener(new EventHandler());
        label4.addAncestorListener(new EventHandler());

        label1.addHierarchyListener(new EventHandler());
        label2.addHierarchyListener(new EventHandler());
        label3.addHierarchyListener(new EventHandler());
        label4.addAncestorListener(new EventHandler());

        label1.addComponentListener(new EventHandler());
        label2.addComponentListener(new EventHandler());
        label3.addComponentListener(new EventHandler());
        label4.addComponentListener(new EventHandler());

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(tabbedPane, BorderLayout.CENTER);
        f.setPreferredSize(new Dimension(600, 400));
        f.pack();
        f.setVisible(true);
    }

    public static void main(String args[]) {
        Main frame = new Main();
    }
}

class EventHandler implements AncestorListener, ComponentListener, HierarchyListener {

    @Override
    public void ancestorAdded(AncestorEvent event) {
        System.out.println("CardlayoutTest.EventHandler.ancestorAdded()");
    }

    @Override
    public void ancestorMoved(AncestorEvent event) {
        System.out.println("CardlayoutTest.EventHandler.ancestorMoved()");
    }

    @Override
    public void ancestorRemoved(AncestorEvent event) {
        System.out.println("CardlayoutTest.EventHandler.ancestorRemoved()");
    }

    @Override
    public void hierarchyChanged(HierarchyEvent e) {
        System.out.println("Components Change: " + e.getChanged());
        if ((e.getChangeFlags() & HierarchyEvent.DISPLAYABILITY_CHANGED) != 0) {
            if (e.getComponent().isDisplayable()) {
                System.out.println("Components DISPLAYABILITY_CHANGED : " + e.getChanged());
            } else {
                System.out.println("Components DISPLAYABILITY_CHANGED : " + e.getChanged());
            }
        }
        if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
            if (e.getComponent().isDisplayable()) {
                System.out.println("Components SHOWING_CHANGED : " + e.getChanged());
            } else {
                System.out.println("Components SHOWING_CHANGED : " + e.getChanged());
            }
        }
    }

    @Override
    public void componentHidden(ComponentEvent e) {
        System.out.println(e.getComponent().getClass().getName() + " --- Hidden");
    }

    @Override
    public void componentMoved(ComponentEvent e) {
        System.out.println(e.getComponent().getClass().getName() + " --- Moved");
    }

    @Override
    public void componentResized(ComponentEvent e) {
        System.out.println(e.getComponent().getClass().getName() + " --- Resized ");
    }

    @Override
    public void componentShown(ComponentEvent e) {
        System.out.println(e.getComponent().getClass().getName() + " --- Shown");
    }
}