Java（面向对象进阶——抽象类）

抽象方法、抽象类

 

 

 练习

package day10.抽象类和抽象方法;

public  abstract class animals {
    private String name;
    private int age;
    public animals(){

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

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
    public abstract void eat(String something);
    public void drink(){
        System.out.println("喝水");
    }
}

package day10.抽象类和抽象方法;

public class frog extends animals {
    public frog(){

    }
    public frog(String name,int age){
        super(name,age);
    }
    @Override
    public void eat(String something) {
        System.out.print("青蛙吃"+something);
    }
}

package day10.抽象类和抽象方法;

public class dog extends animals{
    public dog(){

    }
    public dog(String name,int age){
        super(name,age);
    }
    @Override
    public void eat(String something){
        System.out.print("狗吃"+something);
    }
}

 

 

package day10.抽象类和抽象方法;

public class sheep extends animals{
    public sheep(){

    }
    public sheep(String name,int age){
        super(name,age);
    }
    @Override
    public void eat(String something){
        System.out.print("山羊吃"+something);
    }
}

package day10.抽象类和抽象方法;

public class test {
    public static void main(String[] args) {
        frog f=new frog("小青",1);
        dog d=new dog("小黄",3);
        sheep s=new sheep("喜羊羊",12);
        f.eat("虫子");
        f.drink();
        d.eat("骨头");
        d.drink();
        s.eat("青草");
        s.drink();
    }
}

 

 小结

 

原文地址：https://blog.csdn.net/weixin_68931360/article/details/145212759

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