J2EE study(一)-----J2EE Foundation

J2EE contains four important technology areas:

The Java XML technology for developing applications that process XML document and implements web services components: The Java API for XML Processing (JAXP)

The Java API for XML-Based Remote Procedure Calls(JAX-RPC)

SOAP with attachment API for Java(SAAJ)

The Java API for XML Registries (JAXR)

The web-tier technology cover the components used in developing the presentation layer of a J2EE or stand-alone web application:Java Servlet

JavaServer Pages(JSP)

JavaServer Pages Standard Tag Library (JSTL)

JavaServer Faces

web application internationlization and localization

The Enterprise JavaBeans(EJB) covers the components used in developing the business logic of a J2EE application:Session Beans

Entity Beans

Message-driven beans

Enterprise Java Beans Query Language

The platform services cover the system services used by J2EE component technologies:Transactions

Resource Connections

Security

Java Message Service