Open the VXP package metadata using a hex editor or specific MAUI resource editors.
Example docker command:
Java games usually look for standard resolutions like 128x128, 176x220, or 240x320. If your MediaTek device has an atypical screen layout, the game may stretch or crash.
Whether you prefer a or a universal emulator solution . Share public link
There is no magical software that will take JAR and output a working VXP. However, for simple J2ME games (no complex Java APIs like JSR-75 file access or Bluetooth), you can use a wrapper or recompile the source code. convert jar to vxp new
Before beginning the conversion process, it is essential to understand why these files are structurally incompatible.
Many search results for "jar to exe" or "jar to executable" are mistakenly conflated with the JAR-to-VXP problem. Tools like , Launch4j , and JPackage are fantastic for wrapping a JAR file into a native Windows or Linux executable. However, these are for desktop operating systems, not the MRE feature phone environment. They are a complete dead end for the JAR-to-VXP goal.
: This step is highly dependent on the specific requirements of your VXP file.
For demonstration purposes, let's assume you are working in a Unix-like environment and need to convert a simple JAR file into a VXP file: Open the VXP package metadata using a hex
On the other side of the spectrum is the . The VXP file extension is typically associated with the Maui Runtime Environment (MRE) SDK .
Not all JAR apps are compatible with the MRE environment. Simple applications work best.
: JAR files are used to package Java classes and their associated metadata and resources into one file to distribute them. They are essentially zipped files with a .jar extension and can be used for a variety of purposes, including libraries, runnable applications, and more.
This is a file format used by newer, often Chinese-manufactured feature phones (MTK devices) to run apps and games, acting as a virtual machine platform. Whether you prefer a or a universal emulator solution
What is the you are trying to run the app on?
docker run -v $PWD:/project brew-sdk:latest make -f brew_jar_conv.mk
Resolution mismatch between the original game design and your phone screen.
If you own the source code of the Java application and want to create a true, standalone .vxp file, you must rewrite or port the application framework to C and compile it using the . What You Need:
Run the Python wrapper (replaces the old .exe)