java - 当我尝试调用在主方法中创建的方法时，出现错误

Question

public class MyClass
{
    public  static short subtractNumbers (short a, byte b, float k )
    {
        int x=(short)a;
        int y=(short)b;
        int z=(short)k;
        return (short)(x+y-z);
    }
    public static void main (String[] args)
    {
        System.out.println(subtractNumbers(127,127,0.0f));
    }    
}

当我编译并运行该程序时，出现错误，如下所示:

error: method subtractNumbers in class MyClass cannot be applied to given types;

System.out.println(subtractNumbers(127,127,0.0f));

required: short,byte,float

found: int,int,float

reason: actual argument int cannot be converted to short by method invocation conversion

为什么代码会导致错误？我想知道。

提前感谢您的帮助，我们将不胜感激。

Answer 1

正如错误所述，您正在传递 2 个 int 数字，而不是一个短整型数字和一个字节。尝试:

System.out.println(subtractNumbers((short) 127, (byte) 127, 0.0f));

或者将您的方法更改为:

public static short subtractNumbers(int a, int b, float k) {
    return (short) (a + b - (int) k);
}