Which statement is false?
A) All built-in collections are synchronized.
B) Concurrent access to a Collection by multiple threads could cause indeterminate results or fatal errors.
C) To prevent potential threading problems, synchronization wrappers are used around collection classes that might be accessed by multiple threads.
D) A synchronization wrapper class receives method calls, adds some functionality for thread safety and then delegates the calls to the wrapped class.

Question

Quizplus · Accepted Answer

Not all built-in collections in Java are synchronized. In fact, some of them are explicitly designed to be unsynchronized for performance reasons. Examples of unsynchronized collections in Java include ArrayList, LinkedList, and HashSet. It is important to carefully choose the appropriate collection implementation when multiple threads may be accessing it to ensure thread safety.

Which Statement Is False