继承||2

快捷键：crl+h可以看到该类下的父子继承关系

父亲：人
package oop.Demon5;

//Person 人 父亲
public class Person {

// public
//protected
//default
// private

public int money = 10000;
public void say(){
    System.out.println("说了一句话");
}
//在java中，所有的类都直接或者间接默认继承object

}

儿子区块：老师与学生
package oop.Demon5;

//学生
public class Student extends Person {

//crl+h快捷键

}

package oop.Demon5;

public class Teacher extends Person {
}

应用：

package oop;

import oop.Demon5.Student;

public class Application {
public static void main(String[] args) {

    Student student = new Student();
    student.say();
    System.out.println(student.money);
}

}