java输入三门课成绩 计算其总分和平均成绩

用notepad++从键盘输入三门课成绩，计算其总分和平均成绩，编写成绩计算类实现功能，并通过测试类验证

package com.xt;

import java.util.Scanner;

public  class Count {


    public  double avg(double chinese, double math, double english) {

        double avg = (chinese + math + english) / 3;
        return avg;
    }

    public  double sum(double chinese, double math, double english) {

       double sum=chinese+math+english;

        return sum;
    }
}


package com.xt;

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {

            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入语文成绩：");
            double chinese = scanner.nextDouble();

            System.out.println("请输入数学成绩：");
            double math = scanner.nextDouble();


            System.out.println("请输入英语成绩：");
            double english = scanner.nextDouble();

          Count count = new Count();

        //计算总分
            double sum=count.sum(chinese,math,english);
        System.out.println(sum);

            //平均成绩
            double avg=count.avg(chinese,math,english);
        System.out.println(avg);


        }


    }

结果