Why use a ReentrantLock if one can use synchronized(this)?
A ReentrantLock is unstructured, unlike synchronized constructs — i.e. you don’t need to use a block structure for locking and can even hold a lock across methods. An example: private ReentrantLock lock; public void foo() { … lock.lock(); … } public void bar() { … lock.unlock(); … } Such flow is impossible to represent via … Read more