package util.concurrent

http://gee.cs.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html

The package mainly consists of implementations of a few interfaces:

• Sync -- locks, conditions
  
• Channel -- queues, buffers
  
• Barrier -- multi-party synchronization
  
• SynchronizedVariable -- atomic ints, refs etc
  
• java.util.Collection -- collections
  
• Executor -- replacements for direct use of Thread