org.apache.activemq.util
Interfaces 
Callback
FactoryFinder.ObjectFactory
Handler
IOExceptionHandler
ServiceListener
Classes 
ActiveMQMessageUtils
BitArray
BitArrayBin
BooleanEditor
BrokerSupport
ByteArrayInputStream
ByteArrayOutputStream
ByteSequence
ByteSequenceData
ClassLoadingAwareObjectInputStream
DataByteArrayInputStream
DataByteArrayOutputStream
DefaultIOExceptionHandler
FactoryFinder
FactoryFinder.StandaloneObjectFactory
FilenameGuardFilter
GenerateJDBCStatements
HexSupport
IdGenerator
IndentPrinter
InetAddressUtil
IntrospectionSupport
IntSequenceGenerator
IOExceptionSupport
IOHelper
JMSExceptionSupport
JMXSupport
LinkedNode
ListEditor
LogWriterFinder
LongSequenceGenerator
LRUCache
LRUSet
MapHelper
MarshallingSupport
MemoryIntPropertyEditor
MemoryPropertyEditor
MessageComparatorSupport
MessageDestinationComparator
RestFilter
ServiceStopper
ServiceSupport
StringArrayEditor
SubscriptionKey
ThreadTracker
TransactionTemplate
TypeConversionSupport
URISupport
URISupport.CompositeData
XStreamFactoryBean
Exceptions 
WrappedException