Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.HeadlessException;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;

public class Main extends JFrame {
    private Internal internalFrame;

    public Main() throws HeadlessException {
        setBounds(10, 10, 600, 400);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLayout(new BorderLayout());
        add(createDesktop(), BorderLayout.CENTER);
        addWindowListener(new WindowAdapter() {
            public void windowOpened(WindowEvent e) {
                internalFrame.setVisible(true);
            }
        });
        setVisible(true);
    }

    private Component createDesktop() {
        JDesktopPane d = new JDesktopPane();
        internalFrame = new Internal("first");
        d.add(internalFrame);
        return d;
    }

    public static void main(String[] a) {
        new Main();
    }
}

class Internal extends JInternalFrame {
    public Internal(String title) {
        super(title);
        setBounds(10, 10, 300, 100);
    }
}