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Emulation software From Wikipedia, the free encyclopedia
MicroEmulator (also MicroEMU) — is a free and open-source platform independent J2ME emulator allowing to run MIDlets (applications and games) on any device with compatible JVM. It is written in pure Java as an implementation of J2ME in J2SE.[4][5][6]
 | |
Demo MIDlet running in MicroEmulator | |
| Other names | MicroEMU |
|---|---|
| Original author(s) | Bartek Teodorczyk |
| Developer(s) | Bartek Teodorczyk, Vlad Skarzhevskyy |
| Initial release | March 31, 2006[1] |
| Final release | 2.0.4
/ January 14, 2010[2] |
| Preview release | 3.0.0-SNAPSHOT.112
/ May 24, 2013[3] |
| Repository | microemu on GitHub |
| Written in | Java |
| Size | 1.1 MB |
| Type | Emulator |
| License | GNU Lesser General Public License version 2.1; Apache License version 2.0 |
| Website | microemu.org |
In November 2001, MicroEmulator project has been created on SourceForge.
On 31 March 2006, MicroEmulator version 1.0 has been released.
In November 2009, project moved to code.google.com,[5] and after Google closed it, development moved to GitHub.[6]
On 10 January 2010, the last stable version 2.0.4 has been released.
On 24 May 2013, the last preview version 3.0.0-SNAPSHOT.112 has been released.
After 2014, MicroEMU technology has been acquired by All My Web Needs company and all the MicroEmulator's docs and binary builds has been removed from the official site.[7][8]
All sources and binary previously released on SourceForge, Google Code and GitHub preserved as open-source, but development stalled since then.[4][5][6]
By default MicroEmulator does not loads all distributed JSRs; user should load it per launch via custom commands instead.[11]
By default, MicroEmulator does not loads JSR 75 lib, required to grant MIDlets an access to file system.
To grant file system access, config2.xml file (on Linux, in ~/.microemulator/ folder) should include the next code <extensions> block after </windows> tag[12]:
<config>
...
</windows>
<extensions>
<extension>
<className>org.microemu.cldc.file.FileSystem</className>
<properties>
<property VALUE="{path/to/folder}" NAME="fsRoot"/>
</properties>
</extension>
</extensions>
<recordStoreManager CLASS="org.microemu.app.util.FileRecordStoreManager"/>
</config>
MicroEmulator should run with loading JSR 75 lib.[13] On Linux, launch command to add into microemulator.desktop file is:
java -cp {path/to}/microemulator.jar:{path/to/lib}/microemu-jsr-75.jar org.microemu.app.Main
On Windows, ; (semicolon) in command should be replaced with : (colon).
To load more libs, path to additional libs should be added each after each in a row into launch command.
MicroEmulator allows conversion of any J2ME app into a Java applet, that could be placed on a web page. This feature is used for demonstrating apps and games demos on vendors sites, but it requires JVM and Java Web Start plugin to be installed on the user's PC or device.[14][15]
MicroEmulator allows interface customization with skins called "devices" (see "Options > Select device..." menu) and distributed with few "devices":
Each "device" skin consist of XML-files, that stores definitions of window size, keys layout and assignations (according scancodes), text rendering options, etc. Optionally, skin could include image textures for "device" background and keys animation on key click and key relax. All files of "device" skin should be packed into ZIP or JAR, and its possible to include few "devices" into single package.[16][17]
Screen could be switched between portrait and landscape (rotated) orientation. Additionally its possible to show current MIDlet screen scaled (x2, x3 or x4) in a separate floating window.
MicroEmulator has official support for the Android platform.[29] It is also possible to convert J2ME MIDlet JAR-packages into standalone APK files.[30]
J2ME Loader — is an enhanced fork of MicroEmulator for Android.[31][32]
JL-Mod — is an enhaced fork of J2ME Loader with the Mascot Capsule 3D API support.[33][34]
MicroEmulator has been ported to iOS, but it requires to use iOS jailbreaking technique to install it on iPhone or other iOS device.[35][36][37][38]
MicroEmulator officialy supports Mac OS, but there is also package in MacPorts repository.[39]
MicroEmulator has an official support for Maemo platform, and there is custom MicroEmulator devices skins (themed to Nokia S60 smartphones with 240x320 and 640x360 displays) made for Nokia N900.[40][41][42][43][44][45][46]
Here is a command to launch MicroEmulator on Maemo with JSR 75 lib loaded, to grant MIDlets file system access:
microemulator -libraryjars /opt/maemo/usr/share/microemulator/lib/microemu-jsr-75.jar
KarinME — is a MicroEmulator front-end launcher for MeeGo/Harmattan platform, with a GUI written in QML.[47][48][49]
mpowerplayer SDK — is a freeware enhanced fork of MicroEmulator, initially created for MacOS as J2ME MIDP 1.0 emulator, later become a platform independed J2ME MIDP 2.0 emulator with own implementation of M3G (JSR 184) and SVG (JSR 226).[50][51][52][53][54][55][56]
WMA (JSR 120) has been implemented for mpowerplayer SDK as an open-source library.[57]
Development stalled after mpowerplayer SDK version 2.0.1185 release in 2007. ZIP of latest distribution package available for download from archived official website on Wayback Machine.[21]
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