org.opengis.feature
Interfaces 
Association
Attribute
ComplexAttribute
DataFeatureCollection
Feature
FeatureCollection
FeatureFactory
FeatureListener
FeatureStore
FeatureStoreListener
FeatureVisitor
GeometryAttribute
LockResponse
Property
Query
Transaction
Transaction.State
Classes 
FeatureEvent
FeatureStoreEvent
Exceptions 
BackingStoreException
FeatureStoreException