org.apache.activemq
Interfaces 
ActiveMQDispatcher
ActiveMQSession.DeliveryListener
AsyncCallback
BlobMessage
ClientInternalExceptionListener
Closeable
CustomDestination
Disposable
EnhancedConnection
LocalTransactionEventListener
Message
MessageAvailableConsumer
MessageAvailableListener
MessageDispatchChannel
MessageTransformer
ScheduledMessage
Service
StreamConnection
ThreadPriorities
TransportLoggerSupport.SPI
Classes 
ActiveMQConnection
ActiveMQConnectionConsumer
ActiveMQConnectionFactory
ActiveMQConnectionMetaData
ActiveMQInputStream
ActiveMQMessageAudit
ActiveMQMessageAuditNoSync
ActiveMQMessageConsumer
ActiveMQMessageProducer
ActiveMQMessageProducerSupport
ActiveMQMessageTransformation
ActiveMQOutputStream
ActiveMQPrefetchPolicy
ActiveMQQueueBrowser
ActiveMQQueueReceiver
ActiveMQQueueSender
ActiveMQQueueSession
ActiveMQSession
ActiveMQSessionExecutor
ActiveMQSslConnectionFactory
ActiveMQTopicPublisher
ActiveMQTopicSession
ActiveMQTopicSubscriber
ActiveMQXAConnection
ActiveMQXAConnectionFactory
ActiveMQXASession
AdvisoryConsumer
FifoMessageDispatchChannel
MessageTransformerSupport
RedeliveryPolicy
SimplePriorityMessageDispatchChannel
TransactionContext
TransportLoggerSupport
Exceptions 
AlreadyClosedException
ConfigurationException
ConnectionClosedException
ConnectionFailedException
DestinationDoesNotExistException
NotStartedException