Java Interview Guide : 200+ Interview Questions and Answers - Concurrent Collections – CopyOnWriteArrayList

The video tutorial explores advanced collections in Java, focusing on the differences between synchronized and concurrent collections. It explains the limitations of synchronized collections, which use the synchronized keyword, leading to performance issues due to thread waiting. The tutorial introduces concurrent collections, which offer new synchronization approaches like copy on write, compare and swap, and locks. The copy on write approach is detailed, highlighting its efficiency in scenarios with few writes and many reads, such as subject-observer scenarios.

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