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Asked: 2026-05-10T20:39:47+00:00

Is there an Iterator implementation that merges multiple iterators? class MergedIterator<T> implements Iterator<T> {

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Is there an Iterator implementation that merges multiple iterators? 

class MergedIterator<T> implements Iterator<T> {      MergedIterator(Iterator<T>... iters)      .... }

And the next method should move on to iters[1] when !iters[0].hasNext() etc

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  1. I’d call that a ConcatenatedIterator myself – a MergedIterator should merge the results of several iterators e.g. based on sorting

    Naming aside, I’m sure there’ll be an implementation in a 3rd party library somewhere. Just off to check Google collections…

    EDIT: Bingo – Iterators.concat

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