public class Grade {
private ：
double english;
double math;
double Chinese;
public：
Grade(double english, double math, double Chinese)
{
this.english = english;
this.math = math;
this.Chinese = Chinese;
}
double sum()
{
return this.english+this.math+this.Chinese;
}
void displayTotal()
{
System.out.println(sum());
}
double average()
{
return total()/3;
}
void displayAverage()
{
System.out.println(average());
}
double getEnglish()
{
return english;
}
void setEnglish(double english)
{
this.english = english;
}
double getMath()
{
return math;
}
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(70, 80, 90));
s.grade.printAverage();
s.grade.printTotal();
}
}