A project contains all the supporting files for one application. When a project is created, the SDK performs these tasks:
Sets the emulator platform for the project.
Sets the project run and compile-time classpaths.
Creates a build script that contains actions for running, compiling, debugging, and building Javadoc. The build process is controlled by project properties, as described in Building a Project.
The Working With Projects window provides a logical view of the project.
The Viewing Project Files window displays a physical view of the project.