Iterator in Java is used to traverse each and every element in the collection. Using it, traverse, obtain each element or you can even remove. ListIterator extends Iterator to allow bidirectional traversal of a list, and the modification of elements. The iterator() method is provided by every Collection class.

How does an iterator work in java?

Iterator in Java is used to traverse each and every element in the collection. Using it, traverse, obtain each element or you can even remove. ListIterator extends Iterator to allow bidirectional traversal of a list, and the modification of elements. The iterator() method is provided by every Collection class.

How does an iterator work?

An iterator is an object (like a pointer) that points to an element inside the container. We can use iterators to move through the contents of the container. … The most obvious form of an iterator is a pointer. A pointer can point to elements in an array and can iterate through them using the increment operator (++).