Abstractization not working

Question

What is wrong with that?? I tried several times but it definitely not works

class Main {
public static void main(String[] args) {
Animal dog = new Dog();
Animal cat = new Cat();

dog.swim();
cat.swim();
dog.play();
cat.play();

}
}

interface Swimmer {
void swim();
}

interface Player {
void play();
}

//implement the Swimmer and the Player interfaces
abstract class Animal implements Swimmer,Player{
}

class Dog extends Animal {
//Override the swim() and the play() methods
void swim(){
System.out.println(" Dog is swimming");
}
void play(){
System.out.println(" Dog is playing");
}
}

class Cat extends Animal {
//Override the swim() and the play() methods
void swim(){
System.out.println(" Cat is swimming");
}
void play(){
System.out.println(" Cat is playing");
}
}

Answer 1

Thanks a lot for helping me!!!