import java.util.Scanner;

class MyMath{
    public int add(int a,int b){
        return a + b;
    }

    public int sub(int a,int b){
        return a - b;
    }

    public int mul(int a,int b){
        return a * b;
    }

    public int div(int a,int b){
        return a / b;
    }
}

class MyMathTest{
    public
 
 static void main(String[] args){
        //建立鍵盤錄入物件
        Scanner sc = new Scanner(System.in);

        System.out.println("請輸入第一個運算元:");
        int firstNumber = sc.nextInt();
        System.out.println("請輸入第二個運算元:");
        int secondNumber = sc.nextInt();

        //建立MyMath物件並使用
        MyMath mm = new
 
 MyMath();

        System.out.println("加法結果:" + mm.add(firstNumber,secondNumber));
        System.out.println("減法結果:" + mm.sub(firstNumber,secondNumber));
        System.out.println("乘法結果:" + mm.mul(firstNumber,secondNumber));
        System.out.println("除法結果:" + mm.div(firstNumber,secondNumber));
    }
}
 

執行結果截圖：