Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Container;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame("JFrame");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Container contentPane = frame.getContentPane();

        // Add a close button
        JButton closeButton = new JButton("Close");
        contentPane.add(closeButton);

        closeButton.addActionListener(e -> System.exit(0));

        frame.pack();
        frame.setVisible(true);
    }
}