org.apache.activemq.util
Interfaces 
Callback
FactoryFinder.ObjectFactory
Handler
IOExceptionHandler
ServiceListener
TypeConversionSupport.Converter
Classes 
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
JmsLogAppender
JmsLogAppenderSupport
JMXSupport
JndiJmsLogAppender
LFUCache
LinkedNode
LockFile
LogWriterFinder
LongSequenceGenerator
LRUCache
MapHelper
MarshallingSupport
MemoryIntPropertyEditor
MemoryPropertyEditor
RestFilter
ServiceStopper
ServiceSupport
StopWatch
StringArrayConverter
StringToListOfActiveMQDestinationConverter
SubscriptionKey
ThreadPoolUtils
ThreadTracker
TimeUtils
TransactionTemplate
TypeConversionSupport
URISupport
URISupport.CompositeData
Exceptions 
WrappedException