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;
import javax.swing.JRootPane;

public class Main {

    public static void main(String[] args) {

        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JRootPane root = f.getRootPane();
        Container content = root.getContentPane();
        content.add(new JButton("Hello"));

        f.pack();
        f.setVisible(true);

    }
}