RosettaCodeData/Task/Window-creation/Java/window-creation.java

import javax.swing.JFrame;

public class Main {
     public static void main(String[] args) throws Exception {
         JFrame w = new JFrame("Title");
         w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         w.setSize(800,600);
         w.setVisible(true);
     }
}