Which collection is designed for many reads and rare writes by copying on modification?
Practice this question from Quiz: Java Concurrency, with options and an explanation.
Question
Which collection is designed for many reads and rare writes by copying on modification?
Option A — Correct answer
CopyOnWriteArrayList
CopyOnWriteArrayList is useful when iteration/read frequency greatly exceeds write frequency.
Option B
ArrayList
Option C
HashMap
Option D
TreeSet