【面向对象】《继承》《方法的重写》的代码示范

package duixiang;

public class 父类 {
    private int age;
    private String name;
    private double height;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        if (age > 25) {
            this.age = 18;
        } else {
            this.age = age;
        }
    }

    public String getName() {
        return name;
    }

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

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public void eat(){
        System.out.println("人类可以吃饭");
    }
    public void sleep(){
        System.out.println("人类可以睡觉");
    }

package duixiang;

public class 子类 extends 父类{

    private int stunumber;

    public int getStunumber() {
        return stunumber;
    }

    public void setStunumber(int stunumber) {
        this.stunumber = stunumber;
    }

    //学生特有属性学习
    public  void  study(){
        System.out.println("好好学习，天天向上");
    }


    //方法的重写：当子类对父类的方法不满意的时候，对父类方法进行修改

    public void eat() {
        System.out.println("学生可以不吃饭");
    }
}

}

package duixiang;

public class 继承的调用 {
    public static void main(String[] args) {
        子类 studen = new 子类();
        studen.setStunumber(9527);
        studen.setAge(18);
        studen.setName("周星驰");
        studen.setHeight(175);

        studen.eat();
        studen.sleep();
        studen.study();

    }
}