Adding items to an array that is a member variable in another class?

Question

My assignment is to add animals that I have created to an enclosure. Animal is an abstract class used to create 4 animals one of which is "croc". Unfortunately I receive an error message when I try to add items to an enclosure.

public class Main {

   public static void main(String[] args) {

   //animals and enclosures created sucessfully here.

   firstEnclosure.addAnimal(croc);

}

public class Enclosure {
    private Animal[] animals;

    public void setAnimal(Animal[] animal){
        this.animals = animal;
    }

    public void addAnimal(Animal animal) {
       setAnimal(animal);

}

The error message reads:

error: incompatible types: Animal cannot be converted to Animal[] setAnimal(animal);

Answer 1

Below is the issue:

public class Enclosure {
    private Animal[] animals;

    public void setAnimal(Animal[] animal){
        this.animals = animal;
    }

    public void addAnimal(Animal animal) {
       setAnimal(animal); // <--**Setting Animal object to the Animal array Object**
}
``````