org.apache.catalina
Interfaces 
Authenticator
Connector
Container
ContainerListener
Context
Deployer
Engine
Host
HttpRequest
HttpResponse
InstanceListener
Lifecycle
LifecycleListener
Loader
Logger
Manager
Mapper
Pipeline
Realm
Request
Resources
Response
Server
Service
Session
Store
Valve
Wrapper
Classes 
ContainerEvent
Globals
InstanceEvent
LifecycleEvent
Exceptions 
LifecycleException