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by Javin Paul.
Original Post: fail-safe vs fail-fast Iterator in Java
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it touches concurrency a bit and interviewee can go deep on it to ask how fail-safe or fail-fast behavior is implemented.
In this article article we will see what is fail-safe and fail fast iterators in java and differences between fail-fast and fail-safe iterators . Concept of fail-safe iterator are relatively new in Java and first introduced with Concurrent Collections in Java 5 like ConcurrentHashMap and CopyOnWriteArrayList.
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