The SampleJSP JSP is located in the /var/opt/SUNWportal/portals/<portal_id>/desktop/developer_sample/SampleJSP directory. These JSPs are used by the SampleJSP channel.
The JSP available in the SampleJSP directory and its description is:
Displays the contents of the Sample JSP channel. This JSP
uses of the Desktop theme, and is used as an example of the channelHighlightColor