Chapter 16, Problem 4PP

Define a class named CheckedArray. The objects of this class are like regular arrays but have range checking. If a is an object of the class CheckedArray and i is an illegal index, then use of a[i] will cause your program to throw an exception (an object) of the class ArrayOutOfRangeError. Defining the class ArrayOutOfRangeError is part of this project. Note that, among other things, your CheckedArray class must have a suitable overloading of the[] operators, as discussed in Appendix 6.