Use a data cable and BitPim or QPST to upload the .vxp to /brew/mod/ on your phone.
For developers or those needing more control, offline software can offer better results than online converters: jar to vxp converter online
Suddenly, her laptop fans roared. Her modern PC was compiling something. Files were converting themselves: .MP4 to .VXP, .PDF to .VXP, even .EXE to .VXP. The old phone began ringing—not a call, but a system alert: "VXP protocol hijacked. Spreading to feature phones worldwide." Use a data cable and BitPim or QPST to upload the
The core problem? You cannot simply rename a .jar to .vxp and expect it to work. You need a converter. Files were converting themselves:
: Desktop-based launchers often support selecting a main class file and outputting the generated VXP directly to a folder. Google Groups Crucial Post-Conversion Features