org.apache.catalina.realm
Classes 
CombinedRealm
Constants
DataSourceRealm
GenericPrincipal
JAASCallbackHandler
JAASMemoryLoginModule
JAASRealm
JDBCRealm
JNDIRealm
JNDIRealm.User
LockOutRealm
LockOutRealm.LockRecord
MemoryRealm
MemoryRuleSet
NullRealm
RealmBase
RealmBase.AllRolesMode
UserDatabaseRealm