synchronized
statements with empty bodies.
Empty synchronized
statements are sometimes used to wait for other threads to
release a particular resource. However, there is no guarantee that the same resource
won't be acquired again right after the empty synchronized
statement finishes.
For proper synchronization, the resource should be utilized inside the synchronized
block.
Also, an empty synchronized
block may appear after a refactoring
when redundant code was removed. In this case, the synchronized
block
itself will be redundant and should be removed as well.
Example:
synchronized(lock) {}
A quick-fix is suggested to remove the empty synchronized statement.
This inspection is disabled in JSP files.