JAVA coding help

public double getTotalWeightOfAllAnimals()

This method will compute the sum of the weight of all elements in the array

Returns:

The total weight of all Animal objects in the animals array

However my code is wrong, why?

Unit test getTotalWeightOfAllAnimals()

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Your output

java.lang.NullPointerException

 public double getTotalWeightOfAllAnimals() { double total = 0; for (int i = 0; i < animals.length; i++) { total += animals[i].getWeight(); } return total; }