Math libs for J2ME

Hi!
I need to do float calculations in J2ME.
anybody knows any existing customized classes to replace java.lang.Float and java.lang.Math ?
but such that wont cause loose of precision in the float calculations.
thanks

See my experience : http://forum.java.sun.com/thread.jsp?forum=50&thread=138662
It's so simple to reintroduce float and double, mathlib etc. only thing required : having the
correspondant libraries with C compiler on your specific hardware.
Regards.

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Missing libraries for j2me?

Hi!
I have source code for Jess (java expert system) written in J2SE that I am trying to compile for J2ME. Of course, I keep getting compilation errors, since J2ME does not have e.g. java.util.Iterator or java.io.Serializable. What can I do (if anything?!) to solve this problem? Jess folks do not have a mobile device version. Are there additional libraries for J2ME I could download and happily compile my code? Thank you, I am really stuck with this!
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Hi Buso,
I am not sure if its a good solution, but you can try it as follows :
Use the source code that comes with Java SDK (src.zip in sdk ), extract the classes (and their dependant classes) to a different folder, compile them and make your own jar file. Keep this Jar file in in WTK's Lib folder.
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Cheers
Sudarshan

How to set classpath for J2ME

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With regards
Santhosh

When you are downloading j2MEWTK, everything is included within it. You dont require MIDP seperately. When you are runnung the ktoolbar , which is provided with J2mewtk, the preverifier runs and creates the required jad file for you. You dont need a forte to run these.
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Where on the Mac can I find the math symbol for Pi. Ie. what is the Unicode number for Pi.?

Where on the Mac can I find the math symbol for Pi?
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Jubbjubb.

Jubbjubb wrote:
Where on the Mac can I find the math symbol for Pi?
On the US keyboard layout, alt/option + p = π

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How to Change String back to math symbol for calculation??

Hi,
How to Change String back to math symbol for calculation to achieve this coding. it's for a for loop
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Where's the API docs for J2ME?

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Math functions for dates

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rmabrey wrote:
I have the calculator working but I am having trouble figuring out thow to do a square root function, nth factorial, absolute value, and Fibonacci. java.lang.Math.sqrt()
nothing for factorial - write your own.
java.lang.Math.abs()
nothing for Fibonacci - write your own.
%

Are Palm OS or Pocket PC viable markets for J2ME?

Hi,
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Again, we're talking mobile phones here -- PDAs running Palm OS or Pocket PC just aren't a viable market for J2ME development as of yet, because they have alternative programming tools and languages and generally more open platforms.
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Hi Nicolas,
Is this true? Judging from personal experience, plus
threads in this forum like Open letter to SUN to
produce a JRE for Pocket PC, there seems to be
some truth to this claim.Unfortunately there not exists a supported free JVM for Pocket PC 2003
devices, there exists some commercial implementations but I haven't found a truly RAD tool to develop java apps for this platform.
I've suffered with pain the old embedded Visual Basic and Visual C environments from Microsoft for mobile devices and I'm suffering the Compact Framework. They've created an acceptable tool like Visual Studio but it's not much better than alternatives with Java.
I can't believe Sun would have surrender to Microsoft in this apps market but I think they've done it.
>
I would like to hear other developer's opinions on
this. Has your company abandoned Java development on
Windows CE (or Pocket PC) and moved to .NET Compact
Framework instead? Or is your company perfectly
comfortable with using Java under those environments,
except for a few hiccups? Why or why not?Our company began to work with MS because there was a great experience in MS desktop apps developing with Visual Basic and Visual C++.
I've heard of some companies developing Java apps in a PC environment and then deploy them in PocketPC by using only the right subset of classes.
Hope this helps.
Kind regards
Jose Luis
Hi,
On the current issue of JDJ, there is an article
called "J2ME: Has it time finally arrived?" where the
author talks about how J2ME is becoming more mature
on the cellphone market. But then the author says:
Again, we're talking mobile phones here -- PDAs
running Palm OS or Pocket PC just aren't a viable
market for J2ME development as of yet, because they
have alternative programming tools and languages and
generally more open platforms.
Is this true? Judging from personal experience, plus
threads in this forum like Open letter to SUN to
produce a JRE for Pocket PC, there seems to be
some truth to this claim.
I would like to hear other developer's opinions on
this. Has your company abandoned Java development on
Windows CE (or Pocket PC) and moved to .NET Compact
Framework instead? Or is your company perfectly
comfortable with using Java under those environments,
except for a few hiccups? Why or why not?
Thanks,
Nicolas Rivera

SAP Java lib for SOAP: is there any chance to use HTTP-compression?

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Gregor

Basic Documentation for J2ME MIDP?

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private TextBox t;
t = new TextBox("Heya!", "Welcome to MIDP development", 256, 0);Now I want to append some more text to this TextBox at from another method in the app, but I can't find any documentation on TextBox to show me how to do this.
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Where is the documentation for MIDP? Is there something similar to the J2SE documentation here -
http://java.sun.com/j2se/1.4/docs/api/index.html
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Warm regards,
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The documentation is part of the SDK when you download it.
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shmoove

Open source, object-oriented embedded database for J2ME

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Perst Lite can be downloaded as part of the Perst open source embedded database package, at
http://www.mcobject.com/downloads.php?step=2&catID=4
Cheers,
Ted

Spam blocked. As this user has only ever logged in here to post spam, the user account is blocked for a year.
db

SIP for J2ME API

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Anoop

Hi Anoop,
Did you get the SIP application working on device. I am trying to run Wtk2.5 "GoSip" App on the device but didn't succeed but was able to run on emulator. While running on emulator I started the SIP server from File->Utilities and entered the local machine name as a proxy host and it ran successfully on emulator. Can you tell me what server to use, which proxy host to enter and what all other changes do I need to do while running the same example on the device. Or were u able to run any SIP application on device? Please help.
Regards,
Pankaj Hotwani.

Math libs for J2ME

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