FreeJ2ME - RetroBIOS

Type	libretro
Classification	Official ports
Source	https://github.com/hex007/freej2me
Version	GIT
Profiled	2026-03-23
Cores	freej2me
Systems	j2me

Technical notes

The native core is a C bridge that spawns a Java process running freej2me-lr.jar, which handles all J2ME emulation. Communication happens over pipes (Linux) or named pipes (Windows). A Java runtime (JRE/JDK 8+) must be installed on the host. The jar is built from source via Apache Ant (build.xml). Same repo hosts standalone AWT and SDL2 frontends alongside the libretro frontend.

1 files | 1 required, 0 optional | 1 in repo, 0 missing

freej2me-lr.jar required in repo
FreeJ2ME libretro Java application

• System: j2me
• Source: src/libretro/freej2me_libretro.c:483-486 (GET_SYSTEM_DIRECTORY + fill_pathname_join + java -jar)
• Platforms: lakka, retroarch, retrobat, retrodeck, retropie, romm
• Not a BIOS dump. Java emulator loaded by the native core at startup via execvp('java', '-jar', path). Built from source via 'ant'. Must be in the system directory root.

Generated on 2026-04-18T08:05:07Z