app-component.xml file is required for using the current application as a component of another application. The file defines the dependencies on other components, describes the existing application modules, generated artifacts and exposed application properties.

The app-component.xml file should be located in a package, specified in the App-Component-Id entry of the global module JAR manifest. This manifest entry allows the build system to find components for a project in the build class path. As a result, in order to use some component in your project, just define the component’s global artifact coordinates in the dependencies/appComponent items of your build.gradle.

By convention, the app-component.xml is located in the root package of the project (defined in metadata.xml) which is also equal to the projects’s artifact group (defined in build.gradle):

Use CUBA Studio to generate the app-component.xml descriptor and the manifest entries for the current project automatically.