Computer scienceProgramming languagesJavaWorking with dataMultithreadingThread-safe collections

CopyOnWriteArrayList

Comprehension

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What will happen if you run this code?

CopyOnWriteArrayList<Integer> onWriteArrayList = new CopyOnWriteArrayList<>();
onWriteArrayList.add(1);
onWriteArrayList.add(2);
onWriteArrayList.add(3);

Iterator<Integer> iterator = onWriteArrayList.iterator();

onWriteArrayList = null;

while (iterator.hasNext()) {
    System.out.print(iterator.next() + " ");
}

Select one option from the list

An exception will be thrown.

"1 2 3 " will be printed

Nothing will be printed.

The code won't compile.

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