Kode Java

package org.kodejava.example.swing;

import javax.swing.JFrame;

public class MainFrameClose extends JFrame {
    public static void main(String[] args) {
	MainFrameClose frame = new MainFrameClose();
	frame.setSize(100, 100);
	
	//
	// Be defining the default close operation of a JFrame to EXIT_ON_CLOSE
	// the application will be exited by calling System.exit() when user
	// initiate a close event on the frame.
	//
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	
	
	frame.setVisible(true);
    }
}