I need help cleaning up my code. When I submitted my assignment I got the following results:

java.lang.NullPointerException

What should happen"

• getFirstAnimal

  public Animal getFirstAnimal()

  Returns:

  The first Animal in the array, or null if the array is empty

• getLastAnimal

  public Animal getLastAnimal()

  This method will get the last Animal in the array

  Returns:

  Animal located at index numAnimals-1

My Code:

public Animal getFirstAnimal() { if(animals[0] == null) { return null; } else { return animals[0]; }

}

public Animal getLastAnimal() { return animals[getNumAnimals()-1]; }