package de.itsblue.ConnectFour; import java.awt.Dimension; import javax.swing.JFrame; public class ConnectFour extends JFrame { /** * */ private static final long serialVersionUID = 1L; ConnectFour() { // Constructor // initialize window this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setPreferredSize(new Dimension(600,600)); // finish up this.pack(); this.setVisible(true); } public static void main(String[] args) { System.out.println(new ConnectFour()); } }