Java Portlet Specification (JSR 286) is a set of standard interfaces and protocols for implementing web portlets using the Java programming language. A portlet is a web application component that runs in a portal server and provides a user interface for displaying and interacting with information from various sources. JSR 286 defines a portlet container architecture that enables portlets to be deployed and managed within a portal environment, and provides APIs for portlet lifecycle management, request handling, rendering, and event handling. A person skilled in Java Portlet Specification is capable of developing and deploying web portlets using standard Java technologies and tools.