学生成绩统计

Posted 2020-11-09 yy1997hs

package 成绩;

public class Grade {
    private double chinese;   //语文成绩
    private double math;    //数学成绩
    private double english;  //英语成绩
     
    public Grade(double  chinese, double math, double english) //构造函数
    {
        this.chinese= chinese;
        this.math = math;
        this.english = english;
    }
 
    public double total() {   //计算总成绩
        return chinese + math + english;
    }
     
    public void printTotal() {     //输出总成绩
        System.out.println(total());
    }
     
    public double average() {    //计算平均值
        return total() / 3;
    }
     
    public void printAverage() {    //输出平均值
        System.out.println(average());
    }
    public double getchinese() {    //获取语文成绩
        return chinese;
    }
 
    public void setchinese(double chinese) {
        this.chinese = chinese;
    }
 
    public double getMath() {   //获取数学成绩
        return math;
    }
 
    public void setMath(double math) {
        this.math = math;
    }
 
    public double getenglish() {     //获取英语成绩
        return english;
    }
 
    public void setenglish(double english) {
        this.english = english;
    }
}

 class Student {
    String name;    //学生姓名
    Grade grade;     //成绩
    public Student(String name, Grade grade) {
        this.name = name;
        this.grade = grade;
    }
     
    public static void main(String[] args) {  //主程序调用
        Student s = new Student("Cici", new Grade(98, 94, 90));
        s.grade.printAverage();
        s.grade.printTotal();
    }
}

结果：
94.0
282.0