Spring Modules  

1. Core Container:
   • Core
   • Beans
   • Context
   • Expression Language  
2. Data Access/Integration:
   • JDBC
   • ORM * JPA * JDO * Hibernate * iBatis
   • OXM * JAXB * XStream * XMLBeans * Castor * JiBX
   • JMS
   • Transation
3. Web:
   1. Web: the initialization of the IOC container using servlet listerners,multipart file-upload
   2. Web-Servlet
   3. Web-Portlet  
   4. AOP and Instrumentation Instrumentation: class instrumentation and classloader implementations
   5. Test