MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;

public class MainClass {

    public static void main(String[] a) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new JTabbedPaneDemo());
        f.setSize(500, 500);
        f.setVisible(true);
    }
}

class JTabbedPaneDemo extends JPanel {

    public void init() {
        try {
            SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                    makeGUI();
                }
            });
        } catch (Exception exc) {
            System.out.println("Can't create because of " + exc);
        }
    }

    private void makeGUI() {

        JTabbedPane jtp = new JTabbedPane();
        jtp.addTab("Cities", new CitiesPanel());
        jtp.addTab("Colors", new ColorsPanel());
        jtp.addTab("Flavors", new FlavorsPanel());
        add(jtp);
    }
}

class CitiesPanel extends JPanel {

    public CitiesPanel() {

        JButton b1 = new JButton("New York");
        add(b1);
        JButton b2 = new JButton("London");
        add(b2);
        JButton b3 = new JButton("Hong Kong");
        add(b3);
        JButton b4 = new JButton("Tokyo");
        add(b4);
    }
}

class ColorsPanel extends JPanel {

    public ColorsPanel() {

        JCheckBox cb1 = new JCheckBox("Red");
        add(cb1);
        JCheckBox cb2 = new JCheckBox("Green");
        add(cb2);
        JCheckBox cb3 = new JCheckBox("Blue");
        add(cb3);
    }
}

class FlavorsPanel extends JPanel {

    public FlavorsPanel() {

        JComboBox jcb = new JComboBox();
        jcb.addItem("Vanilla");
        jcb.addItem("Chocolate");
        jcb.addItem("Strawberry");
        add(jcb);
    }
}