About Java EE

API

Web Service

JAX-WS

Used for developing webservices. This api is meant for SOAP based services As per Roy Fielding's theory, REST services should be stateless. So SOAP is the only choice.

XML

StaX

Streaming API for XML (StAX) This Java API is an event-driven, pull parsing API for reading and writing XML documents. This java API will enable you to create bidirectional XML parsers that are fasts, relatively easy to program and have a light memory footprint.

• More infos: https://docs.oracle.com/javase/tutorial/jaxp/stax/index.html

JAXB

Java Architecture for XML Binding

• More infos: https://docs.oracle.com/javase/tutorial/jaxb/intro/

JAXP

Java API for XML Processing (JAXP)

• More infos: https://docs.oracle.com/javase/tutorial/jaxp/index.html

SAAJ

SOAP with Attachments API for Java

• More infos: https://docs.oracle.com/javaee/5/tutorial/doc/bnbhg.html