Oracle Complex Event Processing applications are built on top of the Spring Framework and OSGi Service Platform. Therefore, it is assumed that you are familiar with these technologies and how to program within the frameworks.
For additional information about Spring and OSGi, see:
Spring Framework API 2.5: http://static.springframework.org/spring/docs/2.5.x/api/index.html
The Spring Framework - Reference Documentation 2.5: http://static.springframework.org/spring/docs/2.5.x/reference/index.html
Spring-OSGi Project: http://www.springframework.org/osgi
OSGi Release 4 Service Platform Javadoc: http://www.springframework.org/osgi
OSGi Release 4 Core Specification: http://www.osgi.org/osgi_technology/download_specs.asp?section=2#Release4