Conditions and Locks

In the previous post we saw how the Lock API could be used as an alternative to synchronized block. We also saw how the Lock API allowed us to do chain locking. There is also a condition object closely associated with Locks:

Locks in Java

After semaphores I decided to look at the Lock interface in Java. The first question that comes is "Why use locks when wait notify works well enough ?" I looked in the documentation for the class and the below lines stand out: