题目要求

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Animal类（父类）

package www.jsu.com;

public class Animal {
    private int age;
    private String color;

    public Animal() {
    }

    public Animal(int age, String color) {
        this.age = age;
        this.color = color;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public void eat(String something){
        System.out.println("动物在吃"+something);
    }
}

Dog类（子类）

package www.jsu.com;

public class Dog extends Animal{
    public Dog() {
    }

    public Dog(int age, String color) {
        super(age, color);
    }

    @Override
    public void eat(String something) {
        System.out.println(getAge()+"岁的"+getColor()+"颜色的狗两只腿死死的抱着"+something+"猛吃");
    }
    public void lookhome(){
        System.out.println("狗在看家");
    }
}

Cat类（子类）

package www.jsu.com;

public class Cat extends Animal {
    public Cat() {
    }

    public Cat(int age, String color) {
        super(age, color);
    }

    @Override
    public  void eat(String something) {
        System.out.println(getAge()+"岁的"+getColor()+"的猫咪着眼睛侧着头吃"+something);
    }
    public void catchMouse(){
        System.out.println("猫在抓老鼠");
    }
}

Person类

package www.jsu.com;

public class Person {
    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(Dog dog,String something){
        System.out.println("年龄为"+age+"岁的"+name+"养了一只"+dog.getColor()+"颜色的"+dog.getAge()+"岁的狗");
        dog.eat(something);
    }
    public void keeppet(Cat cat,String something){
        System.out.println("年龄为"+age+"岁的"+name+"养了一只"+cat.getColor()+"颜色的"+cat.getAge()+"岁的狗");
        cat.eat(something);
    }
}

test（主函数）

package www.jsu.com;

public class Test {
    public static void main(String[] args) {
        Person person=new Person("李四",10);
        Dog dog=new Dog(2,"黑");
        person.keeppet(dog,"骨头");
    }
}