J2EE 相关技术主要分为几大块

1. Web Service技术

- Java API for XML Processing (JAXP)

- Java API for XML Registries (JAXR)

- Java API for XML-based RPC (JAX-RPC)

-    SOAP with Attachments API for Java (SAAJ)

2. 组件模型技术（Component Model Technologies）

- Java Servlet

- JavaServer Pages

- JavaServer Faces

-  Enterprise JavaBeans

- Java Message Service

-    J2EE Connector Architecture

3. 管理技术(Management Technologies)

- J2EE Deployment Specification

- J2EE Management Specification

- J2EE Client Provisioning

-    Java Authorization Contract for Containers

4. 其他相关技术(Other J2EE Technologies)

- JDBC

- Java Data Objects (JDO)

- CORBA (Java IDL and Java RMI-IIOP)

- JavaMail

- Transactions