public class Grade {
private double english;
private double math;
private double sql;
public Grade(double english, double math, double sql) {
this.english = english;
this.math = math;
this.sql = sql;
}
public double total() {
return english + math + sql;
}
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 getSql() {
return sql;
}
public void setSql(double sql) {
this.sql = sql;
}
} 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(100, 94, 90));
s.grade.printAverage();
s.grade.printTotal();
}
}
结果：
94.66666
284.0