Even Counter

Geoffrey Challen // 2021.2.0

Define a public class named EvenCounter. It should have a public instance method named addValue taking a single int argument. If the argument passed to addValue is even, it increments the count stored by the counter. addValue does not return a value. You should provide a getter for the count getCount. Your class should also provide a constructor taking a single int argument that sets the initial count, which you should assert is non-negative. Your class should not allow modifications to the count except using the addValue method.

When you are finished your class should work as follows: