Player没有no-arg构造函数，可以使用：
Player player = new Player("My Nickname", "Player Type");如果希望提示用户输入
Player参数，则可以这样阅读：
Scanner scanner = new Scanner(System.in);System.out.print("Enter Player Name:");String nickName = scanner.nextLine();System.out.print("Enter Player Type:");String playerType = scanner.nextLine();Player player = new Player(nickName, playerType);
