Java。我的 class 来自用户的输入不是 return 到主程序

Question

for user1.guess1's value here other class is returning only 0 而不是用户输入的值。在这里需要帮助我如何获得用户输入的原始值。

class randtestdrive
{ 
  public static void main(String[] args){    
    user user1 = new user();
    user1.guess();

    int a = user1.guess1 ;
    int b = 5;

    //for user1.guess1's value here other class is returing only 0 instead of value entered by the user.
    // need help here how I can get the orignal value entered by the user.
    System.out.println(user1.guess1+" test A's value");

    if (a==b)
      System.out.println("Hit");
    else if(user1.guess1 != b)
      System.out.println("Missed!"); 
  }
}
class user
{ 
  Scanner in = new Scanner(System.in);  
  int guess1;
  void guess()
  {
    System.out.println("Guess the random number in 1-10");
    int guess1 = in.nextInt();
  }
}

Answer 1

这个：

int guess1 = in.nextInt();

是局部变量，不是实例变量，去掉int就可以了。

这是你的 user class:

class user {
    Scanner in = new Scanner(System.in);
    int guess1;

    void guess() {
        System.out.println("Guess the random number in 1-10");
        int guess1 = in.nextInt();
    }
}

创建新用户时，实例变量默认分配 0。然后你读入一个局部变量，它在你的 guess() 方法结束时被丢弃。所以你在 main 方法中得到了一个 0。

Java。我的 class 来自用户的输入不是 return 到主程序

Java. My one class's input from user is not return to main program

java

class

compiler-errors

instance-variables