JSR168286

JSR168286 is not an official Java Specification Request. The designation appears to be a conflation of two distinct JCP specifications dealing with the Portlet API: JSR-168 and JSR-286. In practice, there is no single JCP approval or public spec titled JSR168286.

JSR-168, Portlet API 1.0, established a standard interface between portlet components and portal containers. It defined essential lifecycles, portlet modes, window states, and the PortletRequest/PortletResponse families, along with preferences and configuration access that enabled portlets to be portable across different portal implementations.

JSR-286, Portlet API 2.0, introduced enhancements to support richer inter-portlet communication and resource serving. It added features such as public render parameters and the ability to serve resources via resource URLs, expanding the interaction model between portlets and improving development flexibility.

Some vendors and developers discuss evolution from JSR-168 to JSR-286 in terms of backward compatibility, but the official transition path is through the distinct JSRs rather than a combined specification. Adoption and implementation continue to vary by portal; many containers provide compatibility layers or dual support for both JSR-168 and JSR-286 when deployed in enterprise environments.

For historical reference, consult the Java Community Process pages for JSR-168 and JSR-286 to review their scope, milestones, and implementation guidance.