The JDeveloper application is the highest level in the organizational structure. While you are developing your application, it stores information about the objects you are working with. At the same time, it keeps track of your projects and all environment settings.
To begin creating a new application, you will open the Create Application wizard. To open the wizard, in the Application Navigator, click New Application.
If an application is open, select New Application from the dropdown list.
A JDeveloper application allows you to specify a predefined type of environment, based on prebuilt templates, depending on the type of application you want to create (web application, Java application, and so on). The application template you select determines the initial project structure, and the named project folders within the application workspace. You can alter existing templates or create new ones. In this example, you will choose to use the Generic Application template, which makes available objects associated with all the technologies that JDeveloper supports in a single project.
A JDeveloper project 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 Application Navigator, projects are displayed as the top level in the hierarchy.
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