The ReentrantReadWriteLock (java.util.concurrency.locks.ReentrantReadWriteLock) policy has changed from J2SE 5 to Java SE 6. CyclicBarrier (java.util.concurrent.CyclicBarrier) and CountDownLatch ...

The java.util.concurrent.atomic subpackage contains low-level utility classes that support lock-free thread-safe programming on single variables. The java.util.concurrent.locks subpackage contains ...

Java provides a set of thread-safe collections in the java.util.concurrent package. These collections are designed for concurrent access and can greatly simplify concurrent programming.

We also reiterated and clarified distributed execution and failure semantics of our APIs, as well as made a lot of improvements on the API level. Last, we introduce a new API, FencedLock, that extends ...