If you cannot get the desktop tool to work, the "new" trend is using a .
VXP devices often have very low RAM; large JAR files will crash upon conversion or launch.
If your goal is simply to play or use the file, it is often much easier to use a Java emulator (like J2ME Loader) on an Android device or computer to run the original JAR file directly.
Modern online tools have simplified what used to require a complex desktop software setup. New online conversion pipelines generally follow a automated three-step process: