{"id":27638886,"url":"https://github.com/squirreljme/squirreljme","last_synced_at":"2025-04-23T22:08:44.724Z","repository":{"id":37265667,"uuid":"65408453","full_name":"SquirrelJME/SquirrelJME","owner":"SquirrelJME","description":"SquirrelJME is a Java ME 8 Virtual Machine for embedded and Internet of Things devices. 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This includes Japanese Keitai software as well! It\nhas the ultimate goal of being _99.9%_ compatible with the Java ME standard.\n\n**SquirrelJME**'s runtime library is written purely in Java with a simple\nabstraction layer on top of native hardware, or otherwise. This allows the\nruntime to be portable across various different systems along with\nseparation of concerns between software running in Java and the hardware. All\nnative access is performed via this abstraction layer and as such there are\nno usages of `native` in any specific class, thus only the classes in the\nabstraction layer require a native implementation.\n\nThere additionally is _NanoCoat_, which is an execution engine written in C\nto allow for running SquirrelJME in a cross-platform way without a dependent\nhost virtual machine.\n\nAdditionally, there is a port of SquirrelJME to RetroArch which enables the\nability to play older J2ME software and games designed for flip-phones.\n\n * Copyright (C) 2013-2025 Stephanie Gawroriski \u003cxer@multiphasicapps.net\u003e\n * \"SquirrelJME\" and \"Lex\" are trademarked by Stephanie Gawroriski 2016-2025\n * _Lex_ and The _SquirrelJME_ Logo were illustrated by...\n   * Kat Adam-MacEwen\n   * Kat@CMYKat Designs \u0026 Illustrations \u003chttps://www.cmykatgraphics.ca/\u003e\n\nThank you to [Hit Save!](https://hitsave.org/) for sponsoring **SquirrelJME**!\n\nPlease support me on [Patreon](https://www.patreon.com/SquirrelJME)!\n\n\u003e Dedicated to _Emily_ (1998-2020), the developer\n\u003e of [Mu](https://github.com/meepingsnesroms/Mu), I valued our friendship\n\u003e greatly and all the time we would spend together nerding about technical\n\u003e stuff, programming, and random topics. I do miss when we would play SNES\n\u003e and NeoGeo games for hours, they were cherished moments. The times goofing\n\u003e about in Kirby's Dream Course (SNES) were some of the most fun times spent\n\u003e with you. We both loves PalmOS devices and I always loved to hear about the\n\u003e new odd and quirky things you discovered about them.\n\u003e -- You will not be forgotten, rest in peace.\n\nAnd...\n\n\u003e Dedicated to _Near_ (1983-2021), the developer of Higan, Ares, etc. and\n\u003e otherwise. You were and still are one of the kindest and most caring person\n\u003e that I knew. You showed me lots of support and encouragement with my own\n\u003e preservation work, and also helped me find the right people to connect with\n\u003e to further that goal. I still do miss our daily conversations, even though\n\u003e it is ironic that we rarely if ever spoke about emulation development there\n\u003e were so many other topics of conversation to go through. Honestly without\n\u003e you, I would not be where I am today and to this day I am holding you close\n\u003e and true to my heart. I push forward for you while holding myself high, I\n\u003e know that you would be proud of where I am today.\n\u003e -- You will not be forgotten, rest in peace.\n\n_SquirrelJME_ utilizes _Install4J_ for cross-platform installers, you can\nread more about it and check out their product page at:\n\n * [Install4J Multi-Platform Installer Builder](\n    https://www.ej-technologies.com/products/install4j/overview.html)\n\nBadges:\n\n * _Checks and Quality_\n   * [![CircleCI](\n     https://img.shields.io/circleci/build/github/SquirrelJME/SquirrelJME/trunk.svg?label=CircleCI%20Build)](\n     https://circleci.com/gh/SquirrelJME/SquirrelJME/tree/trunk)\n   * [![Code Climate Maintainability](\n     https://img.shields.io/codeclimate/maintainability-percentage/SquirrelJME/SquirrelJME)](\n     https://codeclimate.com/github/SquirrelJME/SquirrelJME)\n     [![Code Climate technical debt](\n     https://img.shields.io/codeclimate/tech-debt/SquirrelJME/SquirrelJME)](\n     https://codeclimate.com/github/SquirrelJME/SquirrelJME)\n   * [![Docker Build](\n     https://img.shields.io/docker/cloud/build/xerthesquirrel/squirreljme.svg?label=Docker%20Container)](\n     https://hub.docker.com/r/xerthesquirrel/squirreljme/builds)\n   * [![RetroArch Core](\n     https://git.libretro.com/libretro/SquirrelJME/badges/trunk/pipeline.svg?key_text=RetroArch%20Core\u0026key_width=115)](\n     https://git.libretro.org/libretro/SquirrelJME)\n * _Social and Community_\n   * [![Discord](https://img.shields.io/discord/278929900893634560.svg?label=Discord%20Server)](\n     https://discord.gg/9PkMMKt)\n * _Downloads and Activity_\n   * ![Commit Activity](\n     https://img.shields.io/github/commit-activity/w/SquirrelJME/SquirrelJME.svg?label=Code%20Commits)\n   * [![Docker Pulls](\n     https://img.shields.io/docker/pulls/xerthesquirrel/squirreljme?label=Docker%20Pulls)](\n     https://hub.docker.com/r/xerthesquirrel/squirreljme)\n   * [![SourceForge Downloads](\n     https://img.shields.io/sourceforge/dm/squirreljme.svg?label=SourceForge%20Downloads)](\n     https://sourceforge.net/projects/squirreljme/files/)\n * _Donations_\n   * [![Liberapay](\n     https://img.shields.io/liberapay/receives/xershadowtail.svg?logo=liberapay\u0026label=LiberaPay)](\n     https://liberapay.com/xershadowtail)\n\nInformation:\n\n * [User Guide](assets/user-guide/readme.mkd)\n * [Code of Conduct](code-of-conduct.mkd)\n * [License](license.mkd)\n   * _Source_: Mozilla Public License 2.0\n   * _Assets_: Creative Commons CC-BY-SA 4.0\n   * _Fonts_ : SIL Open Font License Version 1.1\n   * [Third Party Licenses](third-party.mkd)\n * [RSS Feed](feed.rss)\n * [Contributing to SquirrelJME](contributing.mkd)\n   * [Credits of Contributions](credits.mkd)\n   * [Test Writing](test-writing.mkd)\n * _End-User Documents_\n   * [Building](building.mkd)\n   * [Changelog](changelog.mkd)\n   * [Compatibility](compatibility.mkd)\n   * [History](history.mkd)\n   * [Release Roadmap](route.mkd)\n * _Developer Resources_\n   * [CircleCI Status](\n     https://circleci.com/gh/SquirrelJME/SquirrelJME/tree/trunk)\n   * [Developer Guide](developer-guide.mkd)\n   * [Developer Notes](assets/developer-notes/index.mkd)\n   * [Design Document](design.mkd)\n   * [Porting SquirrelJME](porting.mkd)\n   * [Project Scope](scope.mkd)\n   * [CLDC 1.8 API (docs.oracle.com)](\n     https://docs.oracle.com/javame/8.0/api/cldc/api/overview-summary.html)\n\n## Repository\n\n * [Online repository](http://squirreljme.cc/)\n   ([HTTPS](https://squirreljme.cc/),\n   [Tor (A)](http://vzwveldr7djnlpg7ujslaqre632htbl3unkmfbltpgumevw63jn47dad.onion/),\n   [Tor (B)](http://hrkzpyi33og6j5z3anfpjuqkawvkw4kxyasrp64elg3i6dffihmdhxad.onion/))\n * SquirrelJME uses `fossil` \u003chttp://fossil-scm.org/\u003e.\n * The repository may be cloned using Fossil:\n   * One of these commands:\n     * `fossil clone -u http://squirreljme.cc/ squirreljme.fossil`\n     * `fossil clone -u https://squirreljme.cc/ squirreljme.fossil`\n     * `fossil clone -u http://vzwveldr7djnlpg7ujslaqre632htbl3unkmfbltpgumevw63jn47dad.onion/ squirreljme.fossil`\n     * `fossil clone -u http://hrkzpyi33og6j5z3anfpjuqkawvkw4kxyasrp64elg3i6dffihmdhxad.onion/ squirreljme.fossil`\n     * `fossil clone -u http://squirrelmfbf2udn.onion/ squirreljme.fossil`\n   * `mkdir squirreljme`\n   * `cd squirreljme`\n   * `fossil open ../squirreljme.fossil`\n * Alternatively via [GitHub](https://github.com/SquirrelJME/SquirrelJME):\n   * `git clone https://github.com/SquirrelJME/SquirrelJME`\n   * `cd SquirrelJME`\n * Alternatively via [repo.or.cz](https://repo.or.cz/SquirrelJME.git):\n   * `git clone https://repo.or.cz/SquirrelJME.git`\n   * `cd SquirrelJME`\n * Trunk Source Snapshot (Main website or `fossil serve` only):\n   * [TAR.GZ](/tarball/squirreljme-trunk.tar.gz?uuid=trunk)\n   * [ZIP](/zip/squirreljme-trunk.zip?uuid=trunk)\n\n## Links\n\n * [My Portfolio](https://shadowtail.dev/)\n * [My Public PGP Key](public-key.gpg.mkd)\n * [SquirrelJME BlueSky](https://bsky.app/profile/squirreljme.cc)\n * [SquirrelJME Mastodon](https://mastodon.online/@SquirrelJME)\n * Locations where you can get support:\n   * [Discord](https://discord.gg/9PkMMKt)\n   * _LiberaChat (IRC)_ (Bridged to _Discord_)\n     * [#squirreljme](ircs://irc.libera.chat:6697/squirreljme) -- Main Support\n     * [#squirreljme-softwares](ircs://irc.libera.chat:6697/squirreljme-software) -- Software channel\n     * [##squirreljme](ircs://irc.libera.chat:6697/#squirreljme) -- Off-Topic\n   * [Reddit](https://reddit.com/r/SquirrelJME)\n * Front facing social media:\n   * [BlueSky](https://bsky.app/profile/squirreljme.cc)\n   * [Mastodon (mastodon.online)](https://mastodon.online/@SquirrelJME)\n   * [YouTube](https://www.youtube.com/channel/UCbmC7qQjeXUEUyE5XfDX5RA/)\n * [Docker Hub](https://hub.docker.com/r/xerthesquirrel/squirreljme)\n * [SourceForge](https://sourceforge.net/p/squirreljme/)\n * Personal Accounts (If you wish to contact me this way)\n   * [GitHub](https://github.com/XerTheSquirrel/)\n   * [Keybase](https://keybase.io/xerthesquirrel)\n   * [LinkedIn](https://www.linkedin.com/in/xerthesquirrel/)\n   * [Mastodon (chitter.xyz)](https://chitter.xyz/@XerShadowTail)\n   * [BlueSky](https://bsky.app/profile/xershadowtail.bsky.social)\n   * [YouTube (Personal)](\n     https://www.youtube.com/channel/UCJ4QrvbDhjtd7u6EpfBQ__g)\n   * E-Mail: \u003cxer@multiphasicapps.net\u003e\n\n## Goals\n\n * _To be small_ - Smaller programs are easier to maintain and are usually\n   simpler.\n * _To be fast_ - With the potential of AOT/JIT, systems that do not normally\n   have a port of an existing virtual machine will usually only have an\n   interpreter.\n * _To be compatible_ - So that existing Java ME 8 applications can run on this\n   virtual machine, along with J2ME applications when required. This has the\n   added bonus of allowing one to use older software to catalog for\n   preservation.\n * _To compile once and run anywhere_ - Current and up to date Java\n   implementations are limited only to a few select systems (_Solaris_,\n   _Linux_, _BSD_, _Mac OS X_, and _Windows_). Java ME 8 as of this writing\n   only supports the *FRDM-K64F* (dropped), *STM32429I-EVAL*, *Raspberry Pi*,\n   *Intel Galileo Gen2* (preview), and *STM 32F746G DISCOVERY* (preview) all\n   of which are either out of date or discontinued by their manufacturers.\n   There are multitudes of devices that support **J2ME**, however that is\n   horribly out of date when compared with the Java that is used today\n   (**J2ME** is equal to Java 1.4 which was released in _2002_).\n\n## Donations\n\nYou may donate to SquirrelJME to which would be used by the author to keep the\nweb server online, the purchasing of new hardware/software, and for the\npurchasing of food items for consumption.\n\n * Traditional\n   * [Ko-Fi](http://ko-fi.com/xerthesquirrel)\n   * [Patreon](https://www.patreon.com/SquirrelJME)\n   * [Liberapay](https://liberapay.com/xershadowtail)\n\n## Important Statements\n\n***JAVA AND ALL OTHER RELATED TRADEMARKS AND COPYRIGHTS ARE OWNED BY ORACLE\nCORPORATION \u003chttp://www.oracle.com/\u003e.***\n\n***SQUIRRELJME IS NEITHER PRODUCED BY, ENDORSED BY, NOR SUPPORTED BY\n_ORACLE CORPORATION_.***\n\n***ALL SOURCE CODE IS WRITTEN BY MYSELF WITH FUNCTIONALITY DETERMINED BY THE\nDOCUMENTED APIS AND RUN-TIME BEHAVIOR. I HAVE NOT LOOKED AT THE SOURCE CODE FOR\nOTHER IMPLEMENTATIONS, NEITHER FREE SOFTWARE NOR PROPRIETARY IMPLEMENTATIONS.\nESSENTIALLY SQUIRRELJME IS A CLEAN-ROOM IMPLEMENTATION OF THE DESIGN OF JAVA\nME 8. THE IMPLEMENTATIONS OF THE JAVA ME 8 APIS AND ASSOCIATED JSRS/JEPS IS\nCONSIDERED BY MYSELF (STEPHANIE GAWRORISKI) TO BE IN THE FAIR USE.***\n\n***THIS SOFTWARE IS INCOMPLETE AND IN ITS CURRENT STATE IS NOT CURRENTLY\n100% COMPATIBLE WITH JAVA ME 8. THERE ARE CURRENTLY NO STABLE RELEASED VERSIONS\nOF THIS SOFTWARE. AS SUCH THE FIRST MAJOR VERSION RELEASE WILL BE WHEN IT IS\nCOMPATIBLE SO AS TO NOT VIOLATE POTENTIAL LICENSES, AND IF POSSIBLE BE VERIFIED\nWITH ANY APPLICABLE TCKS (SO IT WOULD BE AN \"OFFICIAL\" IMPLEMENTATION).***\n\n","funding_links":["https://github.com/sponsors/XerTheSquirrel","https://patreon.com/SquirrelJME","https://ko-fi.com/xerthesquirrel","https://liberapay.com/xershadowtail","https://paypal.me/xerthesquirrel","https://www.patreon.com/SquirrelJME)!","http://ko-fi.com/xerthesquirrel","https://www.patreon.com/SquirrelJME"],"categories":["Emulators"],"sub_categories":["SDKs"],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsquirreljme%2Fsquirreljme","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsquirreljme%2Fsquirreljme","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsquirreljme%2Fsquirreljme/lists"}