12-多态的综合练习

• 练习

  • 实操

    动物类

    public class Animal {
        //动物
        //颜色
       private String color;
       //年龄
       private int age;
        private String something;
        public Animal() {
        }
    
        public Animal(String color, int age,String something) {
            this.color = color;
            this.age = age;
            this.something = something;
        }
    
        public String getColor() {
            return color;
        }
    
        public void setColor(String color) {
            this.color = color;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        public String getSomething() {
            return something;
        }
    
        public void setSomething(String something) {
            this.something = something;
        }
    
        //行为
        public void eat(String something){
        }
    }
    
    

    猫类

    public class cat extends Animal{
        //猫
    
        public cat() {
        }
    
        public cat(String color, int age, String something) {
            super(color, age, something);
        }
    
        public void catchMouse(){
            System.out.println("猫在抓老鼠");
        }
    
        @Override
        public void eat(String something) {
            System.out.println(getColor()+"的"+getAge()+"岁的猫在眯着眼睛侧着吃"+getSomething());
        }
    }
    
    

    狗类

    public class dog extends Animal{
        //狗
    
        public dog() {
        }
    
        public dog(String color, int age, String something) {
            super(color, age, something);
        }
    
        public void lookHome(){
            System.out.println("狗在看家");
        }
    
        @Override
        public void eat(String something) {
            System.out.println(getAge()+"岁的"+getColor()+"的狗"+"在抱着"+getSomething()+"猛吃");
        }
    
        public void keepPet(person p) {
    
        }
    }
    
    

    饲养员类

    public class person {
        //饲养
        private String name;
        private int age;
    
        public person() {
        }
    
        public person(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 void keepPet(Animal a,String something){
            if (a instanceof dog){
                System.out.println(age+"岁的"+name+"养了一只"+a.getColor()+"的"+a.getAge()+"的狗");
                a.eat(something);
                ((dog) a).lookHome();
            }else if (a instanceof cat){
                System.out.println(age+"岁的"+name+"养了一只"+a.getColor()+"的"+a.getAge()+"的猫");
                a.eat(something);
                ((cat) a).catchMouse();
            }
        }
    }
    

    测试

    public class test {
        public static void main(String[] args) {
            Animal a = new Animal();
            dog d = new dog("五颜六色",888,"泛着金光的骨头");
            d.lookHome();
            d.eat("泛着金光的骨头");
            cat c = new cat("黑白相间",999,"泛着彩光的鱼");
            c.catchMouse();
            c.eat("泛着彩光的鱼");
            person p = new person("蔡徐坤",188);
            p.keepPet(d,"泛着金光的骨头");
            p.keepPet(c,"泛着彩光的鱼");
        }
    }
    
    

原文地址：http://www.cnblogs.com/Alluw/p/16928473.html