Iterator

In this post, we will learn about the PeekingIterator and AbstractIterator classes from Google Guava library.

A ListIterator in Java is an Iterator that allows us to traverse the list in either direction, modify the list during iteration, and obtain the iterator’s current position in the list.

Java has two ways to iterate over the elements of a collection - using an Enumeration and an Iterator. This post explains Enumeration and Iterators in Java.