Method main

staticchecking/petspeak/PetSpeak.java:27–31

(String[] args)

public class PetSpeak {
  static void command(Pet p) { p.speak(); }
  public static void main(String[] args) {
    Pet[] pets = { new Cat(), new Dog() };
    for(Pet pet : pets)
      command(pet);
  }
}
/* Output:
meow!