import java.awt.*; public class User extends Thread { Window window; public User(Window window) { this.window = window; } public void run() { if(window.currentGame.getClass().equals(TwoPlayersGame.class)) { ((TwoPlayersGame)window.currentGame).addTurn(); } // else if(window.currentGame.getClass().equals(OnePlayerGame.class)) { // ((OnePlayerGame)window.currentGame).setWhoseTurn(2); // } } }