实现Java简单继承

面向对象练习-简单继承

一、完成教师类的创建

说明：

id 代表身份证号

name 表示姓名

birth 表示出生日期

title 表示职称（讲师，副教授，教授等）

二、完成学生类的创建

说明：

major 代表专业

三、编写主类测试

四、使用继承的方法来实现类之间的关系设计。

代码实现：

 class Person{
     String id,name,birth;
     public Person() {
     }
     public Person(String id,String name,String birth) {
         this.id=id;
         this.name=name;
         this.birth=birth;
     }
     public void setId(String id) {
         this.id = id;
     }
     public void setName(String name) {
         this.name = name;
     }
     public void setBirth(String birth) {
         this.birth = birth;
     }
     public String getBirth() {
         return birth;
     }
     public String getId() {
         return id;
     }
     public String getName() {
         return name;
     }
     public void showInfo() {
         System.out.printf("name is: %s  ,id is: %s  ,birth is: %s,",name,id,birth);
     }
 }
 class Student extends Person{
     String major;
     public Student() {
 
     }
     public Student(String id,String name,String birth,String major) {
         super(id, name, birth);
         this.major=major;
     }
     public void setMajor(String major) {
         this.major = major;
     }
     public String getMajor() {
         return major;
     }
     @Override
     public void showInfo() {
         super.showInfo();
         System.out.println("major is : "+major);
     }
 }
 class Teacher extends Person{
     String title;
     public Teacher() {
     }
     public Teacher(String id,String name,String birth,String title) {
         super(id, name, birth);
         this.title=title;
     }
     public void setTitle(String title) {
         this.title = title;
     }
     public String getTitle() {
         return title;
     }
     @Override
     public void showInfo() {
         super.showInfo();
         System.out.println("title is : "+title);
     }
 }
 public class Main{
 
     public static void main(String[] args) {
         Student stu=new Student("1000","张大","1998.01.23","Computer");
         Student stu1=new Student();
         stu1.setName("张三");
         stu1.setBirth("1998.04.01");
         stu1.setId("1001");
         stu1.setMajor("Computer");
 
         Teacher teacher1=new Teacher("ls1001","李大","1977.01.01","Professor");
         Teacher teacher=new Teacher();
         teacher.setName("李四");
         teacher.setBirth("1974.05.01");
         teacher.setId("ls1002");
         teacher.setTitle("Professor");
 
         stu.showInfo();
         stu1.showInfo();
         teacher1.showInfo();
         teacher.showInfo();
     }
 
 }