While a magical, one-click program does not exist due to fundamental architectural differences between Java and MediaTek's MRE, you can still enjoy classic mobile gaming. By utilizing a VXP-based Java emulator or rebuilding apps via the official MediaTek SDK, you can breathe new life into vintage software on your feature phone or smartwatch.
Transfer the new .vxp to your phone’s "Applications" or "Games" folder via SD card. jar to vxp converter