关于java:训练营-计算器

package com.tedu;
import java.util.Scanner;
// 接管用户输出的两个 int 类型数值
// 依照用户输出 1,2,3,4，别离执行相应的 +-*/ 办法 将最初的后果输入至控制台。public class Test08 {public static void main(String[] args) {System.out.println("请输出第一个数字");
        int a = new Scanner(System.in).nextInt();
        System.out.println("请输出第二个数字");
        int b = new Scanner(System.in).nextInt();
        System.out.println("请输出要执行的运算");
        int c = new Scanner(System.in).nextInt();
        if (c==1){add(a,b);
        }else if (c==2){substruction(a,b);
        }else if(c==3){multiplication(a,b);
        }else if(c==4){division(a,b);
        }
    }
    private static void division(int a, int b) {
        int sum=a/b;
        System.out.println("sum =" + sum);
    }
    private static void multiplication(int a, int b) {
        int sum=a*b;
        System.out.println("sum =" + sum);
    }
    private static void substruction(int a, int b) {
        int sum = a-b;
        System.out.println("sum =" + sum);
    }
    private static void add(int a, int b) {
        int sum=a+b;
        System.out.println("sum =" + sum);
    }
}