J2A allows users to convert Jar files to Cod format through an easy to use graphical interface. This free program also provides basic error checking and notifies the users of incompatible Jar files. The user sets the save destination for the converted file, then browses for the Jar to be converted. A Jad files is automatically generated using the Jar's manifest and this information is used to create the Alx description file. The converted program can then be uploaded to the user's Blackberry smartphone through Blackberry Desktop Manager.