Collections · interview question
Given a List<String> catalog, which method call on an Iterator<String> allows safe removal of an item during iteration?
Multiple choiceHardchapter-4-curatedpremiumcollectionsiteration-and-traversal
Answer and explanation
Correct answer
D. Remove()
Why
The remove() method of an Iterator allows you to safely remove the last element returned by the iterator without causing a ConcurrentModificationException.
Test yourself on Collections
A free test with instant, explained results. No account needed.
More Collections questions
- If you need to ensure that elements are processed in the exact order they are added but also need occasional access to…
- Given an e-commerce application that requires frequent updates and lookups of product prices, which collection would…
- Which operation is most efficient for an ArrayList?
- What will happen if you try to access an index in an ArrayList that is out of bounds?
- You need to store product IDs and ensure no duplicates, with the ability to retrieve them in sorted order. Which…
- What will happen if you try to insert a null key into a HashMap?