Unfortunately I'm not a developer and I can't provide you with a example
that implements that solution. More over all applications that I have belong
to Content Providers that for sure wont allow me to send them, but I can
assure you that all DoJa applications that I have seen, use that workaround
to avoid the 30Kb limitation.
J2ME-MIDP implemented in GSM don't have a "standardized" limitation but a
handset hardware limitation that ranges from 30Kb (ie:Nokia 6310i) to 300Kb
(i.e Nokia 7650). J2ME-DoJa 1.5/2.0 profile sets a fixed limitation of 30Kb
in the profile itself. Also sets that the maximum HTTP Request size from a
DoJa application is 10Kb so the mentioned "workaround" has to do several
requests to the server to download the whole application.
A "jar" file in fact is a MIDlet Suite with different midlets within. For
security reasons a MIDlet can only share information with or call to a
MIDlet that belongs to the same MIDlet Suite. Normally a MIDlet Suite (aka a
"jar" file) contains ony a single MIDlet.
Hope this helps,
[mailto:keitai-l-bounce_at_appelsiini.net]En nombre de Mathew Smith
Enviado el: viernes, 11 de julio de 2003 15:42
Asunto: (keitai-l) Re: F505i
Interesting commments, I (as jon mentions) thought that the jar size =
limits were due to the static nature and size of the wap buffer (Euro =
phones -sorry). So when I first read this post I thought there is =
something intrinsic to the DoJa profile implemented on the DoCoMo =
Also I thought that MIDlets (and iAppli's by implication) are not =
allowed to call other midlets outside a specific Midlet suite? - could =
someone clarify for me?
Also if there was a tool that allowed a programmer to build unlimted jar =
size apps that function over a network in the way Jofre describes, would =
anyone buy it?
Jofre Palau wrote:
> even 30Kb it is very small for a Java Application, developers use a =
> workaround for that limitation. They build a small (15 to 20 Kb) base =
> application that the first time that it's executed connects back to =
> server and downloads extra chunks of code. No only extra resources but =
> actual code. Notice that the limitation is a DoCoMo DoJa 2/1.5 =3D
> limitation and not a handset issue.
If you have any code that demonstrates this (for cldc) i'd=20
be really interested in seeing it.
My recollection is that the limits on download size are due=20
to concerns about network traffic / user packet cost.
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Received on Fri Jul 11 19:26:25 2003