org.codehaus.activemq.util
Interfaces 
Callback
Classes 
AsyncProxy
BitArray
BitArrayBin
DefaultComparator
ExceptionTemplate
ExecutorHelper
FactoryFinder
IdGenerator
IndentPrinter
JMSExceptionHelper
JmsLogAppender
JmsLogAppenderSupport
JndiJmsLogAppender
LRUCache
MessageListenerSupport
SerializationHelper
TransactionTemplate