Web Reference: Jul 11, 2025 · To implement an Iterator, we need a cursor or pointer to keep track of which element we currently are on. Depending on the underlying data structure, we can progress from one element to another. Apr 30, 2015 · Also, in your List class, you should be specifying Iterator and ListIterator as generic using Iterator and ListIterator, or else the compiler won't be able to handle the generics properly. Sep 17, 2025 · In this tutorial, we’ll explore how Generics and Iterators work together to provide type-safe iteration across Lists, Sets, and Maps, along with wildcards, PECS principle, and best practices.
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