Main.java Source code

Introduction

Here is the source code for Main.java

Source

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;

public class Main {

    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setSize(800, 600);
        f.setLocationRelativeTo(null);

        JTabbedPane p = new JTabbedPane();
        p.addTab("T1", new JPanel());
        p.addTab("T2", new JPanel());
        p.addTab("T3", new JPanel());

        p.addChangeListener(e -> {
            System.out.println("" + p.getSelectedIndex());
            // Index starts at 0, so Index 2 = Tab3
            if (p.getSelectedIndex() == 2) {
                // do your stuff on Tab 3
            }
        });
        f.add(p);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setVisible(true);
    }
}