This is the latest version of oswego concurrent compiled with jdk1.4 # Merge JBAS-4698 # This effectively fixes the oswego library. # Several defects were found, including an unthreadsafe call to toArray() Patch1: concurrent-ConcurrentHashMap.patch Patch2: concurrent-ConcurrentReaderHashMap.patch The patches enable debug for the generated code and apply the unreleased fixes to ConcurrentHashMap and PooledExecutor mentioned here: http://g.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html