To develop and run a BlackBerry device application that invokes the Payment Service APIs, you must add the .jar file for the Payment Service library to your project.

1. In the BlackBerry Java Development Environment, in the Files pane, right-click on the project that you want to add the library to and click Add File to Project.
2. On the Files of Type drop-down list, click All Files.
3. Navigate to the location where you extracted the Payment Service SDK and double-click the paymentapi.jar file.
4. Click OK.