why JAD or JAR

[Gowri]

Hello Everybody,

In some mobiles we need both JAD & JAR for installation for some only either is enough, can u please tell me what will be the reason for it.

Thanks,
Gowri.

[Maveric]

Hello Everybody,

In some mobiles we need both JAD & JAR for installation for some only either is enough, can u please tell me what will be the reason for it.

Thanks,
Gowri.

Hi there, Gowri

JAD is the descriptor file for a JAR file. The JAD is very small as the JAR file is usually quite large.
The point in this is that a mobile device can download the small JAD file first, which then will contain
a detailed set of information about the contents of the actual JAR file. This information includes Vendor,
JAR size and so on. There are e.g. limitations for JAR size per mobile device.

One could think it would be easier just to provide the JAR, but more and more MIDlet suites depend on
the non-standard information, available with the JAD file. Thinking about distribution, it is essential to include
both.

Best Regards,
Marko