The Portal Server portlet applications framework provides a convenient method for customizing, configuring, and deploying portlet applications. This can be done by editing a single properties file and executing several well-defined ant targets.
Portlet application source files are located in the PortalServer-DataDir/portals/portal-ID/portletapps directory. Each subdirectory here contains an ant build.xml file, a Java properties file named tokens.properties, and the source files for the portlet web application.