JavaSE-10.3.1【继承案例-老师和学生】

package day1.yppah03;

/*
3 继承练习

3.1 案例-老师和学生
 */

public class PersonDemo {
    public static void main(String[] args) {
        Teacher t1 = new Teacher();
        t1.setName("tom");
        t1.setAge(30);
        System.out.println(t1.getName() + "," + t1.getAge());
        t1.teach();

        Teacher t2 = new Teacher("amy", 28);
        System.out.println(t2.getName() + "," + t2.getAge());
        t2.teach();

        Student s1 = new Student();
        s1.setName("zhangsan");
        s1.setAge(16);
        System.out.println(s1.getName() + "," + s1.getAge());
        s1.study();

        Student s2 = new Student("lisi", 17);
        System.out.println(s2.getName() + "," + s2.getAge());
        s2.study();
    }
}

package day1.yppah03;

public class Person {

    private String name;
    private int age;

    public Person() {
    }

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

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

    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

}

package day1.yppah03;

public class Student extends Person{

    public Student() {
    }

    public Student(String name, int age) {
        super(name, age);
    }

    public void study(){
        System.out.println("好好学习");
    }

}

package day1.yppah03;

public class Teacher extends Person{

    public Teacher(){}

    public Teacher(String name, int age){
        /*this.name = name; //error 子类不可访问父类的私有成员
        this.age = age;*/
        super(name, age); //利用父类有参构造实现子类的有参构造
    }

    public void teach(){
        System.out.println("好好教书");
    }

}