对象的继承

继承

 

 

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package base.oop.demo01.demo05;
​
public class Demo01 {
    public static void main(String[] args) {
        Student student = new Student();
        student.say();
​
    }
}
​

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package base.oop.demo01.demo05;
//person  人    父类
//在java中，所有的类，都默认直接或者间接继承object
public class Person {
    public void say(){
        System.out.println("说了一句话");
    }
}
​

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package base.oop.demo01.demo05;
//学生  人  派生类或者子类
//子类继承父类就会拥有父类的全部方法
public class Student extends Person {
    //ctrl+h  快捷键
}
​

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package base.oop.demo01.demo05;
//teacher is 人   派生类或者子类
public class Teacher extends Person {
}
​