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:
Building manually:
Full build: To rebuild all workbench resources, select
Project > Build All from the menu bar.
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 automatically: this option is selected in the Project menu,
an incremental build occurs every time you save a modified workbench resource.