Exploring the Differences Between set() and lazySet() in Java Atomic Variables

Differences Between set() and lazySet() in Java Atomic Variables

Java provides us with atomic variables that are used to guarantee thread safety in concurrent programming. These atomic variables consist of the set() and lazySet() methods, which both have their own unique functionalities.

The set() method immediately updates the volatile value of an atomic variable, so that all other threads will be able to see the change. This guarantees that all threads will use the updated value of the atomic variable, ensuring thread safety.

The lazySet() method does not immediately update the volatile value of an atomic variable, but instead sets it in a lazy manner. This means that other threads will not be able to see the change until after the current thread has finished its job. This can occasionally lead to a race condition, so it is not guaranteed to be thread safe.

In summary, set() is guaranteed to be thread safe, while lazySet() is not necessarily thread safe. If you are looking for an atomic variable that is guaranteed to be thread safe, then set() is the best choice.