java用继承的方式实现一个多态程序

public class Animal {
public void sound() {
System.out.println("Animal makes a sound");
}
}

public class Dog extends Animal {
@Override
public void sound() {
System.out.println("Dog barks");
}
}

public class Cat extends Animal {
@Override
public void sound() {
System.out.println("Cat meows");
}
}

public class PolymorphismExample {
public static void main(String[] args) {
Animal animal1 = new Dog();
Animal animal2 = new Cat();

animal1.sound();
animal2.sound();
}
}

// Output:
// Dog barks
// Cat meows