Editing MIDlet

{{Short description|Java ME application format}}
[[File:MMI RATP.JPG|thumb|MIDlet running in J2ME emulator]]
A '''MIDlet''' is an application that uses the [[Mobile Information Device Profile]] (MIDP) of the [[Connected Limited Device Configuration]] (CLDC) for the [[Java ME]] environment. Typical applications include games running on mobile devices such as [[smartphone]]s with [[J2ME]] support and [[feature phone]]s which have small graphical displays, simple numeric keypad interfaces and limited network access over [[HTTP]].<ref>{{cite book |last=Topley |first=Kim |title=J2ME in a Nutshell |year=2002 |publisher=[[O'Reilly Media]] |isbn=978-0-596-00253-4 |url=https://archive.org/details/j2meinnutshellde00topl |url-access=registration |access-date=3 March 2010 |pages=[https://archive.org/details/j2meinnutshellde00topl/page/46 46]–47}}</ref>

The <code>.jad</code> file describing a MIDlet suite is used to deploy the applications in one of two ways. Over the air (OTA) deployment involves uploading the <code>.jad</code> and <code>.jar</code> files to a [[Web server]] which is accessible by the device over [[HTTP]]. The user downloads the <code>.jad</code> file and installs the MIDlets they require.<ref>{{cite web|title=Introduction to OTA Application Provisioning|url=http://developers.sun.com/mobility/midp/articles/ota/}}</ref> Local deployment requires that the MIDlet files be transferred to the device over a non-network connection (such as through [[Bluetooth]] or [[IrDa]], and may involve device-specific software).<ref>{{cite web|title=Deploying Wireless Java Applications|url=http://developers.sun.com/mobility/midp/articles/deploy/}}</ref> Phones that support [[Secure Digital|microSD]] cards can sometimes install .jar or .jad files that have been transferred to the memory card.

== Platforms ==
Mainly MIDlet applications and games developed for [[Series 40]], [[Series 60]], [[Nokia Asha platform|Nokia Asha]] and [[Sony Ericsson Java Platform]].

== Emulation ==
MIDlet can run using [[MicroEmulator]] app on any desktop PC with [[JavaSE]] and on [[Maemo]].<ref>{{Cite web |date=2013-04-26 |title=MicroEmulator |url=https://sourceforge.net/projects/microemulator/ |access-date=2024-08-12 |website=SourceForge |language=en}}</ref><ref>{{Cite web |title=MicroEmulator for Maemo (N900) by Ruediger Gad |url=https://www.my-maemo.com/software/applications_name_MicroEmulator_faq_42_fldAuto_1429.html |website=my-maemo.com |quote=MicroEmulator is a free J2ME implementation for Maemo 5. It lets you run J2ME (Java MIDP) applications on non-J2ME devices. Uses icedtea6, a version of the OpenJDK (Java 6 programming language runtime and development kit).}}{{dead link|date=May 2024}}</ref><ref>{{Cite web |date=2010-05-08 |title=maemo.org - package overview for MicroEmulator |url=http://maemo.org/packages/view/microemulator/ |access-date=2024-08-12 |website=maemo.org |language=en}}</ref><ref>{{Cite web |date=2012-06-10 |title=maemo.org - package overview for microemulator-s60-skin |url=http://maemo.org/packages/view/microemulator-s60-skin/ |access-date=2024-08-12 |website=maemo.org |language=en}}</ref> On [[Android (operating system)|Android]] devices via the J2ME Loader (MicroEmulator fork) application.<ref>{{Citation |last=Shakarun |first=Nikita |title=nikita36078/J2ME-Loader |date=2024-08-11 |url=https://github.com/nikita36078/J2ME-Loader |access-date=2024-08-12}}</ref><ref>{{Cite web |title=J2ME Loader - Apps on Google Play |url=https://play.google.com/store/apps/details?id=ru.playsoftware.j2meloader&hl=en_US |access-date=2024-08-12 |website=play.google.com |language=en-US}}</ref>

Other J2ME emulators also could be used with or without some limitations.

==Restrictions==
Unlike a [[Java applet]], a MIDlet is limited to use of the [[LCDUI]] rather than the more familiar widgets of [[Abstract Window Toolkit|AWT]] and [[Swing (Java)|Swing]]. There are also restrictions on the size of <code>.jar</code> files and the number of concurrent HTTP connections based on the MIDP specification.

==See also==
{{Portal|Computer programming}}
* [[Mobile Information Device Profile]]
* [[Connected Limited Device Configuration]]

==References==
{{Reflist}}

{{Java (Sun)}}

{{DEFAULTSORT:Midlet}}
[[Category:Java device platform]]
[[Category:Mobile software programming tools]]