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Massimo Scola
Courses Plus Student 632 PointsIllegal Argument Exception? Why?
Why is letter an illegal argument exception? I mean, why does it throw the error in the first place?
2 Answers
Rafal Rudzinski
12,829 PointsYou throw an IllegalArgumentException when a value passed into a method is not an expected value.
For example: Let's say you have a method that expects an input of integers from 1-50. You can test for this in your method and throw an IllegalArgumentException if the passed value is out of range.
It's a way to validate input and ensure that whoever is calling that method is providing the correct parameter(s) and/or handling the exception.
Massimo Scola
Courses Plus Student 632 PointsOK now I understand. Thanks a lot!