MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.BorderLayout;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class MainClass {
    public static void main(String args[]) throws Exception {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JTabbedPane tabbedPane = new JTabbedPane();
        tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
        String titles[] = { "A", "B", "C", "D", "E", "F" };
        int mnemonic[] = { KeyEvent.VK_A, KeyEvent.VK_B, KeyEvent.VK_C, KeyEvent.VK_D, KeyEvent.VK_E,
                KeyEvent.VK_F };
        for (int i = 0, n = titles.length; i < n; i++) {
            add(tabbedPane, titles[i], mnemonic[i]);
        }

        ChangeListener changeListener = new ChangeListener() {
            public void stateChanged(ChangeEvent changeEvent) {
                JTabbedPane sourceTabbedPane = (JTabbedPane) changeEvent.getSource();
                int index = sourceTabbedPane.getSelectedIndex();
                System.out.println("Tab changed to: " + sourceTabbedPane.getTitleAt(index));
            }
        };
        tabbedPane.addChangeListener(changeListener);

        frame.add(tabbedPane, BorderLayout.CENTER);
        frame.setSize(400, 150);
        frame.setVisible(true);

    }

    static void add(JTabbedPane tabbedPane, String label, int mnemonic) {
        int count = tabbedPane.getTabCount();
        JButton button = new JButton(label);
        tabbedPane.addTab(label, button);
        tabbedPane.setMnemonicAt(count, mnemonic);
    }

}