JAD / JAR attributes questions.

From what I can tell there are 18 attributes (16 MIDlet- and 2 MicroEdition-) that are mentioned in JSR 118. Excluding for now the Runtime-Execution-Environment.
The JAD has five mandatory attributes (Name, Version, Vendor, Jar-URL and Jar-Size). The JAR has five (MIDlet-Name, Version and Vendor and MicroEdition-Profile and Configuration). I know that Name, Version, Vendor must always match (signed or unsigned).
My questions are about the other optional attributes and how they should be validated and the rules around if an attribute(s) is included in the JAD does it need to be in the JAR as well and must it always be identical.
Example1 (assuming mandatory atts are present and valid)
Jad = MIDlet-Icon: icon.png
JAR = MIDlet-Icon is not present
App is signed. Should this cause an error or is it allowed? What if the app is unsigned?
Example2:
Jad = MIDlet-Icon: icon.png
JAR = MIDlet-Icon: stars.png
App is signed. I think this would result in a 905. What if unsigned?
I've seen some docs that refer to four attributes that the JAD should ignore: MIDlet-Jar-Size, MIDlet-Jar-URL, MIDlet-Install-Notify and MIDlet-Delete-Notify. Are there others?

Can you find the specifications for your device. Nokia, Motos, SEs all list the specs for their devices. Try visiting the web site for your device. There are also some sites that index the specs for phones

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I am able to install an application which I developed on my Pearl 8110 using BB desktop manager(.alx).
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Will I have to install an Installer in my mobile.
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Set the proper MIME types for JAD, JAR and COD files.
JAD: text/vnd.sun.j2me.app-descriptor
JAR: application/java-archive
COD: application/vnd.rim.cod
Check the documentation for your web-server for exact steps you have to do to set the MIME types for files.

[J2ME Polish] How to generate jad/jar for all devices?

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I've developed a J2ME Polish application using Netbeans 6.1 as IDE.
Now I'd like to generate the corresponding jad/jar for all the existing devices. How can I do that?
Furthermore, as soon as I'll have generated all these jar/jad, I'd like to put them all in a Web directory in order to make each device able to download the jad/jar corresponding to its configuration. How can I switch a given device towards the appropriate jad/jar in this Web directory?
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Even though JDK1.4 is not officially shipping the
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http://java.sun.com:80/j2se/1.4/docs/guide/plugin/developer_guide/contents.html
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JAD / JAR attributes questions.

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