Choosing the right JDE to develop your blackberry apps

When creating and building your application, it is important to choose the correct version of the BlackBerry JDE to make sure that the application is compatible with the target BlackBerry smartphones. Applications built in the BlackBerry JDE are forward-compatible with newer BlackBerry Device Software versions, but they are not backward-compatible with older versions.




For example, an application built in BlackBerry JDE 4.1 runs on a BlackBerry smartphones running BlackBerry® Device Software 4.1 and later. It does not run on a BlackBerry smartphones running BlackBerry Device Software 4.0. Thus, when building applications, you should use a BlackBerry JDE version that matches the lowest version of BlackBerry Device Software you want to support.



Note: To verify the version of BlackBerry Device Software installed on the BlackBerry smartphone, select Options > About.

Distributing a BlackBerry game via desktop or usb

To generate an ALX file from the JDE, right-click the project and select Generate ALX file.

Distributing an application for desktop installation is easy—just give the ALX and COD files to the user.

The process of installing is a bit more complex:

1. Connect the device to the computer using a USB cable.
2. If it’s not already running, start the BlackBerry Desktop Manager.
3. Select the Application Loader.
4. Click Add/Remove Applications.
5. Click Browse, and find the ALX file for your application.
6. Make sure the check box next to your application is checked, and click Next and complete the wizard.

What is Javaloader

Javaloader is bundled with all JDE kits, and you can usually find it in Program Files / Research In
Motion / BlackBerry JDE 4.x / bin folder.