JAVA：如何编写一个关于学生管理系统，且能计算的？

Student.java

/**
 * (1)编写一个Student类，包含姓名，身高，年龄三个成员变量；
 */
public class Student {

    private String name;

    private String gender;

    private int age;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getGender() {

        return gender;

    }

    public void setGender(String gender) {

        this.gender = gender;

    }

    public int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    // (2)Student类内定义一个computer方法，能够计算两个整数相加；
    public int compute(int a, int b) {

        return a + b;

    }

}

UniversityStudent.java

/**
 * (3)编写一个 UniverStudent类并且是Student的子类，该类新增成员变量学号，
 * 并重写父类的computer方法用于计算两个整数相乘；
 */
public class UniversityStudent extends Student {

    private String StudentNumber;

    public String getStudentNumber() {

        return StudentNumber;

    }

    public void setStudentNumber(String studentNumber) {

        StudentNumber = studentNumber;

    }

    @Override
    public int compute(int a, int b) {

        return a * b;

    }

}

StudentTest.java

public class StudentTest {

    /**
     * (4)编写一个含有main方法的测试类。
     * 在main方法中创建子类对象，对其姓名，身高，年龄和学号赋值，
     * 计算并输出两个整数相乘的结果。
     */
    public static void main(String[] args) {

        Student student = new Student();

        student.setName("MasterWang998");

        student.setGender("Female");

        student.setAge(18);

        System.out.println(student.compute(3, 3));

        UniversityStudent universityStudent = new UniversityStudent();

        universityStudent.setName(student.getName());

        universityStudent.setGender(student.getGender());

        universityStudent.setAge(21);

        System.out.println(universityStudent.compute(3, 3));

    }

}