The application control file is the highest level in the application's organizational structure. It stores information about the objects you are working with, while you are creating your application. It keeps track of your projects and the environment settings while you are developing your Java program.
To begin creating a new application and project, you will open the Create Application dialog. To open the dialog, in the Applications Navigator, right-click the Applications node and choose New Application.
A JDeveloper project control file is used to logically group files that are related. A project keeps track of the source files, packages, classes, images, and other elements that your program may need. You can add multiple projects to your application to easily access, modify, and reuse your source code.
Projects manage environment variables such as the source and output paths used for compiling and running your program. Projects also maintain compiler, runtime, and debugging options so that you can customize the behavior of those tools per project.
In the Applications Navigator, project control files are displayed at the second level in the hierarchy under the application control file.
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