java—学生、大学生、研究生类

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_42623428/article/details/83181675

Description

定义Student学生类，拥有学号、姓名、性别属性，提供构造函数，以及相应属性的get set函数，提供函数attendClass(String className)表示上课。
定义CollegeStudent大学生类继承自Student类，拥有新增属性专业，提供构造函数，提供新增属性的get和set函数
定义GraduateStudent研究生类继承自CollegeStudent类，拥有新增属性导师，提供构造函数，提供新增属性的get和set函数，提供函数doResearch() 表示做研究（打印xx is doing research）。

main函数中对构造的类进行测试

Input

学生类信息，学号、姓名、性别
大学生类信息，学号、姓名、性别、专业
研究生类信息，学号、姓名、性别、专业、导师

Output

学生类信息
大学生类信息
研究生类信息

Sample Input

1 liu female
2 chen female cs
3 li male sc wang

Sample Output

no: 1
name: liu
sex: female
no: 2
name: chen
sex: female
major: cs
no: 3
name: li
sex: male
major: sc
supervisor: wang
li is doing research

Pre Append Code

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
         Scanner scan = new Scanner(System.in);      
         int no = scan.nextInt();
         String name = scan.next();      
         String sex = scan.next();      
         Student s = new Student(no, name, sex);
         s.print();

         no = scan.nextInt();
         name = scan.next();      
         sex = scan.next();      
         String major = scan.next();
         CollegeStudent c = new CollegeStudent(no, name, sex, major);
         c.print();

         no = scan.nextInt();
         name = scan.next();      
         sex = scan.next();      
         major = scan.next();
         String supervisor = scan.next();
         GraduateStudent g = new GraduateStudent(no, name, sex, major, supervisor );
         g.print();
         g.doResearch();
         scan.close(); 
    }
}

class Student{
    private int no;
    private String sex;
    private String name;
    
    public Student(int no,String name,String sex) {
        this.no=no;
        this.name=name;
        this.sex=sex;
    }

    public int getNo() {
        return no;
    }

    public void setNo(int no) {
        this.no = no;
    }

    public String getSex() {
        return sex;
    }
    
    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void print()
    {
        System.out.println("no: "+no);
        System.out.println("name: "+name);
        System.out.println("sex: "+sex);
    }
}
class CollegeStudent extends Student {
    private String major;
    
    public CollegeStudent(int no, String name,String sex,String major) {
        super(no,name,sex);
        this.major = major;
    }
    public String getMajor() {
        return major;
    }
    
    public void setMajor(String major) {
        this.major = major;
    }
    
    public void print() {
        super.print();
        System.out.println("major: "+major);
    }
}

class GraduateStudent extends CollegeStudent{
    private String teacher;
    
    public GraduateStudent(int no,String name,String sex,String major,String teacher){
        super(no,name,sex,major);
        this.teacher = teacher;
    }
    
    public String getTeacher() {
        return teacher;
    }
    
    public void setTeacher(String teacher) {
        this.teacher = teacher;
    }
    
    public void print() {
        super.print();
        System.out.println("supervisor: "+teacher);
    }
    
    public void doResearch() {
        System.out.println(this.getName()+" is doing research");
    }
}