After you have created a portlet project and written your portlet
application code as needed, you can build your portlet application. A build
command compiles workbench resources. The command can be triggered in three
ways:
Project build: To build a single project, select the project,
then select Project > Build Project from the menu bar, or select Build Project by
highlighting the project in the Project Explorer view and right-clicking.
Building manually:
Full build: To rebuild all workbench resources, select
Project > Build All from the menu bar.
Building automatically:Build Automatically option
is selected in the Project menu, an incremental build
occurs every time you save a modified workbench resource.