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();
    }

}