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The moose likes Java Micro Edition and the fly likes Manifest.MF? Big Moose Saloon
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Anthony Yulo
Ranch Hand

Joined: Feb 22, 2003
Posts: 52
Whats the Manifest.MF file for? I recognized it on all the example apps that came with WTK2.1
Do I need that when im deploying midlets?

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Mark Spritzler

Joined: Feb 05, 2001
Posts: 17276

The Manifest file is required for the Jar file. It defines a lot of what the JAD file can define, but sometimes you only have the Jar, so the Manifest is the only thing that the device can read. If there isn't one in the Jar file, then how can the mobile device know which is your MIDlet(s) and which aren't.


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Anthony Yulo
Ranch Hand

Joined: Feb 22, 2003
Posts: 52
OK, so how do i make a

I'm using a Nokia Developer Suite.. and when i create a package, the only things that the program generates are the .jad and .jar files?

I installed the package thru bluetooth(Nokia PC Suite). I only copied the .jar file , the program runs OK in my celfone.. So, it seems i don't need the anymore? or is is already inside the .jar file?
vishwas bhatt
Ranch Hand

Joined: Nov 30, 2000
Posts: 129
hi Anthony ,

Just unflate your Jar File you will get your answer.

dan moore
Ranch Hand

Joined: Nov 04, 2001
Posts: 68
btw, it's actually 'MANIFEST.MF' (i.e. case sensitive) - i had grim problems when i was adding my manifest file in the wrong case...

cheers, dan.

dan moore, infomatiq ltd.<br />email<br /><a href="" target="_blank" rel="nofollow"></a>
Robert Virkus

Joined: Jun 26, 2004
Posts: 16
There are tools out there which create JAD and MANIFEST files automatically for you, e.g. J2ME Polish (, which is based on Ant and can do some other nifty things as well.

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subject: Manifest.MF?
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