学生成绩管理
public class Grade {
private double english;
private double math;
private double chinese;
public Grade(double english, double math, double chinese) {
this.english = english;
this.math = math;
this.chinese = chinese;
}
public double total() {
return english + math + chinese;
}
public void printTotal() {
System.out.println(total());
}
public double average() {
return total() / 3;
}
public void printAverage() {
System.out.println(average());
}
public double getEnglish() {
return english;
}
public void setEnglish(double english) {
this.english = english;
}
public double getMath() {
return math;
}
public void setMath(double math) {
this.math = math;
}
public double getChinese() {
return chinese;
}
public void setChinese(double chinese) {
this.chinese = chinese;
}
}
public class Student {
String name;
Grade grade;
public Student(String name, Grade grade) {
this.name = name;
this.grade = grade;
}
public static void main(String[] args) {
Student s = new Student("Cici", new Grade(75, 88, 92));
s.grade.printAverage();
s.grade.printTotal();
}
}
实验结果:
85.0
255.0
原文：https://www.cnblogs.com/abcde12345/p/9102508.html