Re: installing java applications on the mobile phone

Hi,

Sorry nobody has gotten back to you yet but this question was posted only recently and please realize these forums are monitored and answered as a "best effort".

When you say application I assume you mean "MIDlet". A correct jar file contains everything needed for an application. The jad file is used for install purposes, for example for over-the-air (OTA) installation (first the jad file is loaded, the information is processed, then the jar file is loaded and installed).

Depending on the phone model it may be possible to install an appliction file via USB or bluetooth directly on the phone. In such cases only the jar file (assuming it contains a complete and correct MANIFEST file) may be enough since the installer doesn't need any information from the jad file.

Hope this helps. PS: For future reference you should post new questions to the ME Application Developer Interest forum (http://forums.java.net/jive/forum.jspa?forumID=111) as that forum is geared specifically towards application development questions.

-- Terrence

Terrence Barr
Evangelist, Java Mobile & Embedded Community
Sun Microsystems, Germany
www.mobileandembedded.org
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