import javax.swing.*; public class Display { public static void main(String[] args) throws Exception{ //creating instance of JFrame int boardWidth = 400; int boardHeight = 400; JFrame game = new JFrame(); game.setSize(boardWidth, boardHeight); game.setVisible(true); game.setLocationRelativeTo(null); game.setResizable(false); Chess chess = new Chess(boardWidth, boardHeight); game.add(chess); game.pack(); chess.requestFocus(); } } //images : https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQN6qOyhiUDLlTlwl19PaMTeiY5rSOqkUqu-g&s