University of Central Florida (UCF) COP3330 Object Oriented Programming Final Practice Exam

The Iterator Pattern is a design pattern that provides a systematic way to access the elements of a collection without exposing the underlying representation of that collection. The key methods that are central to this pattern are primarily the ones that manage the traversal through the collection.

The method `hasNext()` plays an essential role in checking whether there are more elements to iterate over. It returns a boolean value indicating the presence of additional elements in the collection, ensuring that the iteration process does not exceed the bounds of the data structure being traversed.

The `next()` method is equally crucial as it retrieves the next element in the iteration. When called, it not only provides the value of the current item but then moves the iterator to the subsequent item, effectively facilitating step-wise traversal through the collection.

Together, these two methods—`hasNext()` and `next()`—are fundamental for implementing the Iterator Pattern, enabling a seamless and encapsulated way to navigate through a collection while maintaining control over the iteration process.