Int无法解除引用错误

Question

我正在尝试从一个方法获取用户输入并在另一个方法中使用它。我对错误感到困惑，因为它们都是int类型。

---

public static void move()
{
    System.out.println("What do you want to do?");
    Scanner scan = new Scanner(System.in);
    int userMove = scan.nextInt();
}

public static void usersMove(String playerName, int gesture)
{
    int userMove = userMove.move(); //error is here

    if (userMove == -1)
    {
        break;
    }

Answer 1

int userMove = userMove.menu();

userMove这里是int（原始数据类型）。你怎么能在那上面调用一个方法呢？

我猜你想要这样的东西： -

public static int move()
{
    System.out.println("What do you want to do?");
    Scanner scan = new Scanner(System.in);
    int userMove = scan.nextInt();
    return userMove;
}

public static void usersMove(String playerName, int gesture)
{
    int userMove = move(); //Now error will go.

    if (userMove == -1)
    {
        break;
    }

Answer 2

只是猜测，因为不清楚userMove是什么......但你似乎使用来自调用者中另一个方法的变量。你需要返回它来做那个

public static int move()
{
   System.out.println("What do you want to do?");
   Scanner scan = new Scanner(System.in);
   return scan.nextInt();
}

public static void usersMove(String playerName, int gesture)
{
   int userMove = move(); //error is here

   if (userMove == -1)
   {
       break;
   }