Web Reference: In the "while" example, the iterator is declared outside the loop, so it will continue to exist after the loop is done. This may cause issues if this same iterator is used again at some later point. An Iterator is an object that can be used to loop through collections, like ArrayList and HashSet. It is called an "iterator" because "iterating" is the technical term for looping. An Iteratoris one of many ways we can traverse a collection, and as every option, it has its pros and cons. It was first introduced in Java 1.2 as a replacement of Enumerationsand: 1. introduced improved method names 2. made it possible to remove elements from a collection we’re iterating over 3. doesn’t guarantee iteration order In this tutorial, ...
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