Question

我的java任务包括创建一个名为Qwixx的棋盘游戏。除了用于创建游戏的驱动程序类之外，还有四个类。在Qwixx类中，我需要创建一个构造函数，该构造函数具有String数组的参数，用于保存玩家的名称。

这是Qwixx类：

public class Qwixx {
private String[] Players;

//constructor
public Qwixx(String[] Players) {

for (int i = 0; i<Players.length; i++) 
    Players[i] = null; //here is my problem where I don't quite know how to 
                       //fill this array with the names from the Driver 
  }                    //class
}

这是Driver类：

public class Driver {
   public static void main(String[] args) {

   Scanner myKey = new Scanner(System.in);

   System.out.print("Please enter the number of players (2-5): ");
    numPlayers = myKey.nextInt();

   for (int i = 1; i<= numPlayers; i++) {
        System.out.print("Please enter the name of player" + i + ": ");
        String name = myKey.next();

        Player joueur = new Player(); //for every player, an object must be
        joueur.name = name;          //created for the Player class
    }
  }
}

这是Player类：

public class Player { 
 public String name;

//default constructor
Public Player() {
name = null;
//initialization of other instance variables 
}

//constructor
Public Player(String playerName) {
name = playerName; }
}

请帮我弄清楚如何将用户从Driver类输入的名称保存到Qwixx类的数组中。任何帮助表示赞赏！

Answer 1

    public class Driver {

    public static void main(String[] args) {

        Scanner myKey = new Scanner(System.in);

        System.out.print("Please enter the number of players (2-5): ");
        int numPlayers = myKey.nextInt();

        //  Player joueur[]= new Player[numPlayers]; // Initializing the Player Objects
        String playerNames[] = new String[numPlayers];  // String Array to store Player Names

        for (int i = 0; i < numPlayers; i++) {
            System.out.print("Please enter the name of player" + i + ": ");
            String name = myKey.next();

            //      joueur[i].name = name;          // Do you really need Player objects to do some other tasks? if yes uncomment this.
            playerNames[i] = name;
        }
        Qwixx qwixx = new Qwixx(playerNames);

        String testNames[] = qwixx.getPlayerNames();

        for (String test : testNames) {
            System.out.println(test);
        }
        // Some other code
    }
}

      class Qwixx {

         private String[] Players;

        public Qwixx() {

    }
//constructor

    public Qwixx(String[] Players) {

        this.Players = new String[Players.length];
        //  System.arraycopy(Players, 0, this.Players, 0, Players.length); 
   // You can use this method System.arraycopy instead of the below for loop.   

        for (int i = 0; i < Players.length; i++) {
            this.Players[i] = Players[i];
        }
    }

    public String[] getPlayerNames() {
        return this.Players;
    }
}

如何将用户的输入保存到数组中？

1 个答案: