In Java, iterators are objects that allow for sequential access to the elements of a collection. The Java Collections Framework provides the Iterator interface, which defines methods for iterating over collections such as lists, sets, and maps. Here's an explanation of iterators and their relationship with collections, along with examples: Iterator Interface: The Iterator interface provides methods to iterate over the elements of a collection sequentially: - boolean hasNext(): Returns true if there are more elements to iterate over. - E next(): Returns the next element in the iteration. - void remove(): Removes the last element returned by `next()` from the underlying collection (optional operation). Collections and Iterators: 1. Collection Interface: - Collections represent groups of objects, such as lists, sets, and maps. - They provide methods for adding, removing, and accessing elements. 2. Iterator Usage: - Collections implement the Iter...
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