There is that takes a JAR file and magically produces a working VXP file. Any tool claiming to do so is either:
Converting a JAR (Java Archive) file to the VXP format allows older mobile applications to run on feature phones that use the , such as certain Nokia Series 30+ or generic "China mobile" devices. Online Conversion Tools jar to vxp converter online new
that includes the tools to compile source code into a VXP file. Signing (Optional but Common) There is that takes a JAR file and
Several websites list "JAR to VXP" services, though their effectiveness varies based on the specific application: FileProInfo jar to vxp converter online new