Packages
com.sun.xml.bind  
com.sun.xml.bind.annotation  
com.sun.xml.bind.api Runtime API for the JAX-WS RI
com.sun.xml.bind.api.impl  
com.sun.xml.bind.marshaller  
com.sun.xml.bind.unmarshaller  
com.sun.xml.bind.util  
com.sun.xml.bind.v2 The JAXB 2.0 runtime
com.sun.xml.bind.v2.bytecode Code that deals with low level byte code manipulation.
com.sun.xml.bind.v2.model.annotation Abstraction around reading annotations, to support internal/external annotations.
com.sun.xml.bind.v2.model.core The in-memory model of the JAXB-bound beans.
com.sun.xml.bind.v2.model.impl Implementation of the com.sun.xml.bind.j2s.model package.
com.sun.xml.bind.v2.model.nav Abstraction around the reflection library, to support various reflection models (such as java.lang.reflect and APT).
com.sun.xml.bind.v2.model.runtime The specialization of com.sun.xml.bind.v2.model.core for the runtime.
com.sun.xml.bind.v2.runtime Code that implements JAXBContext, Unmarshaller, and Marshaller.
com.sun.xml.bind.v2.runtime.output Code that writes well-formed XML (XmlOutput and its implementations}.
com.sun.xml.bind.v2.runtime.property  
com.sun.xml.bind.v2.runtime.reflect Abstraction around accessing data of actual objects.
com.sun.xml.bind.v2.runtime.reflect.opt Hosts optimized Accessor, TransducedAccessor, and Transducer.
com.sun.xml.bind.v2.runtime.unmarshaller  
com.sun.xml.bind.v2.schemagen Schema generator.
com.sun.xml.bind.v2.util