Understanding JSR 168
JSR 168 is a standard for portals running in a Java 2 Platform, Enterprise Edition (J2EE) architecture. It specifies content definitions much like pagelets, called portlets, that present portal content defined according to the JSR 168 standard. Portlets are Java-based web components that you can register in the PeopleSoft portal just as you register pagelets. Both HTML templates and frame templates support portlet content.
Portlets generate fragments of markup (such as HTML, Extensible HyperText Markup Language, and Wireless Markup Language). The PeopleSoft portlet engine manages and invokes portlets by using Java programs. This combines markup fragments that are generated by different portlets into a portal page.
You develop your own Java-based JSR 168-compliant portlets, and then register them by using the PeopleSoft portal registration components.
You expose your locally installed portlets to remote WSRP consumers by creating entries in the portal entity registry.