Introduction to Inter Portlet Communication

The Portal Server software includes an application programming interface (API) which is an extension to JSR-168 Portlets, in the com.sun.portal.portlet Java package. Using this API, JSR-168 portlets will be able communicate with each other even if they are in different web applications. It is assumed that all these portlets will be on the same instance of a Portal Server and running inside the Portal Server Portlet container.