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I’m from a C# background where the iterators implement IDisposable interface. Are there any iterators in Java that implement a similar interface that makes them close automatically?
Java’s Iterator is just an abstraction for iterating over some collection of objects. If the underlying data structure needs some clean-up after iteration (e.g. closing a file), then you need to keep a reference to that underlying object so you can do whatever must be done to “dispose” of it.