java - 扫描仪类作为函数参数 - 如何引用它

Question

谁能告诉我如何将 Scanner 类作为函数参数引用？我的意思是:如果我有一个主要功能:

public static void main(String[] args)
{ Scanner in = new Scanner(System.in);
 int a = nextInt();
 int b = nextInt();
 isPositive(<how do i refer to a and b here>);
}
public static bolean isPositive(Scanner in)
{ <how do I refer to a and b here, to check if (a - b) > 0 )
}

谢谢!

Answer 1

您遇到的问题之一是无法正确调用扫描仪。

 int a = in.nextInt();
 int b = in.nextInt();

从这里您可以将从扫描仪获得的值传递到您的 isPositive 类中

public static boolean isPositive(int a, int b) { }