What Is A Fail-safe Iterator?

1.	What Is A Fail-safe Iterator?
Answer» An iterator is considered fail-safe if it does not throw ConcurrentModificationException. ConcurrentModificationException is not THROWN as the fail-safe iterator makes a copy of the underlying STRUCTURE and iteration is done over that snapshot. SINCE iteration is done over a copy of the collection so interference is IMPOSSIBLE and the iterator is guaranteed not to throw ConcurrentModificationException. An iterator is considered fail-safe if it does not throw ConcurrentModificationException. ConcurrentModificationException is not thrown as the fail-safe iterator makes a copy of the underlying structure and iteration is done over that snapshot. Since iteration is done over a copy of the collection so interference is impossible and the iterator is guaranteed not to throw ConcurrentModificationException.

Answer»

An iterator is considered fail-safe if it does not throw ConcurrentModificationException. ConcurrentModificationException is not THROWN as the fail-safe iterator makes a copy of the underlying STRUCTURE and iteration is done over that snapshot.

SINCE iteration is done over a copy of the collection so interference is IMPOSSIBLE and the iterator is guaranteed not to throw ConcurrentModificationException.

An iterator is considered fail-safe if it does not throw ConcurrentModificationException. ConcurrentModificationException is not thrown as the fail-safe iterator makes a copy of the underlying structure and iteration is done over that snapshot.

Since iteration is done over a copy of the collection so interference is impossible and the iterator is guaranteed not to throw ConcurrentModificationException.

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