Do you ever think it'd be fun to change the game files .jar (J2ME) previously existing on your computer into a game with the extension .apk (android package)? Or when you find the game you want to play on android but you can not do because the system or to use different extensions.
Now it is not impossible anymore .jar application to .apk can make it happen. Change application .jar to .apk without fear of display screen that is not suitable. Because the application is in providing custom display, so we can customize the phone display screen us.
you can try Convert Jar to Apk online here