Annotations
Explore essential Java concurrency annotations that document class and method thread-safety, immutability, and synchronization requirements. Understand how annotations like @ThreadSafe, @Immutable, and @GuardedBy(lock) inform users and maintainers about safe multithreaded access patterns and locking mechanisms, improving code clarity and static analysis.
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Overview
In this lesson, we’ll explore the various Java annotations that are related to concurrency. These are:
@ThreadSafe@NotThreadSafe@Immutable@GuardedBy(lock)
Class-level annotations
Note that these annotations serve as documentation about class behavior but don’t change the ability or functionality of class in any way. Also, these class-level annotations become part of the public documentation of a class.