Compaq iPAQ h1945

Hi all,
I'm new to Java/J2ME programming (coming from a C# background) and had a question regarding java support on my iPAQ. I've built a few test apps using NetBeans 4.1 and so far things are working fine. However I'd like to try out some of these apps on a "live" device.
I own a Compaq iPAQ h1945 which doesn't come with a jvm (either on the device or on a supplemental CD). I can't seem to find any jvm to download that lists this model as being compatible either. What are my options? Is it just impossible to create a java app for my iPAQ or am I just not looking in the right direction?
Thanks in advance for any help you can provide!
Brian

Check out http://www.telio.net (this web site is not always up...). It also includes a GPS NMEA parser

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Problem running multiple instances of Creme JVM on Compaq IPaq

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Ok, maybe in 3.22 it was not yet solved, if you download the latest CrEme, this should work. If not, contact NSIcom support: [email protected]

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What do I need for a Compaq IPAQ

I have been given a task to put an application on a pocket PC which wil aid a plant inspector inspect storage containers for problems.
It needs to display a number of questions and have the inspector check yes/no or n/a .
It needs to write this data to a flat file on the pocket PC.
When this is synced to the inspector's regular PC, it will be loaded
into an Oracle database
My main problems are:
1) I don't know Java..but I have a book! (My background is using Oracle products like SQL*PLUS,PL*SQL,Oracle Forms..)
2) I don't have a clue about what version of Java to load to my PC to develop this for the pocket PC. J2ME? PersonelJava?
3) Assuming I can develop this on the PC, do I just copy a runtime
version to the pocket PC along with the code?
Thanks for any help you can provide!
Sue C

Greetings.
1. That is a good start.
2-3. On the PC you need Java 2 Standard Edition Java Development Kit, or Jdk1.3.1 (or 1.4, but I would pick 1.3.1 if I were you).
No you can not run a Window PC Java Virtual Machine on a Pocket PC.You need to have the right engine. You can't put a V8 from a Ferrari on a motor cycle either. I use http://www.jeode.com/content/products/pda.shtml as a JVM on the PDA's we are developing for.
But, if you get it to work on an PC, you will probably get it to work on a PDA.
/Lime

Ipaq Speculation: Java vs MS C++

Hi,
I am starting a project for a Compaq Ipaq 3870 with PocketPC 2002, and am debating between developing using Java or MS C++. If at all possible, I would rather take the Java route, since I've developed in both, and am less than humored by how non-standard MS's version of C++ is.
After doing some research, I've come to the conclusion that the Jeode VM is reasonable for running Java, unless I'm willing to swap out the WinCE OS. Also, as my application is likely to have an extensive UI, I would definitely like to have AWT (and Swing support if at all possible). Further, I've tried the Forte4j Mobile Edition to see how IDE support is in this realm.
So, given my rather limited knowledge, here are some questions:
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- Is there an emulator/skin for the Ipaq available that may be added to the list of emulators for Forte? Or, how may one be created?
- What other Ipaq emulator alternatives for Java development are present? - What API (J2ME / PersonalJava) should the Java code be written to?
Thank you,
SP

Hi prsheila,
My name is Lee Graham, I'm very much a newbie when it comes to Java programming,
but I'm giving it a whirl. I found your messages on the Wireless Developer site regarding
your attempts to code for the iPaq. I'm in a similar situation and I thought you might be
able to help. I have some code for an application which I would like to port over to J2ME
for the iPaq wireless device. I've downloaded Forte (or "ONE" as it's now called) but it
seems to be forcing me to use MIDP and to create Midlets and Midlet Suites. But, from
what I've read, Forte ME should allow me to compile and emulate for Personal Java, which,
if I understand correctly, is just a subset of JDK and is not as limited as MIDP (for example,
it can use AWT). Do you know, precisely, how I can create a new project in Forte (or
other IDE, I'm open to suggestions) and load my old code so that I can compile and emulate
for the iPaq?
Also, I understand that Swing will have to be tossed when I port over to the new
environment. Are there any other major concerns like that I'll need to be warry of?
Thanks a lot for any help you might be able to provide,
-Lee

Ipaq Socket problems

I'm running into the following problem while running a PersonalJava application on a Compaq ipaq 3600. The Java application tries to open a Socket connection to a server, then close the connection for a number of iterations
(currently 300). However, when it reaches the iteration in the range of approximately 193-199, it throws a java.net.ConnectionException when it tries to create a new Socket. I am unable to get any Java application
to create a new Socket after this happens, until I perform a soft reset of the ipaq. This happens every time I run the application. The server I'm currently connecting to is an apache webserver, but I have tried to connect to various servers (different host/port combinations) and the problem always occurs.
It is occurring on both the Jeode and Sun WinCE PersonalJava beta 1.1 implementation.
The following source code produces the problem:
import java.io.*;
import java.net.*;
public class SocketTest {
public static void main(String args[]) {
Socket s1 = null;
PrintWriter pw = null;
try {
FileOutputStream fos = new FileOutputStream("\\socketoutput.txt");
pw = new PrintWriter(fos, true);
} catch (IOException ioe) {
System.exit(0);
try {
for (int i = 1; i < 300; i++) {
s1 = new Socket("192.168.0.57", 80);
pw.println("Opened socket " + i);
pw.println("socket is " + s1.toString());
s1.close();
pw.println("closed socket " + i);
try {
Thread.sleep(600);
} catch (Exception e) {
} catch (Exception e) {
e.printStackTrace();
e.printStackTrace(pw);
if (s1 != null) {
pw.println("Socket.toString(): " + s1.toString());
pw.println("Exception message: " + e.getMessage());
pw.close();
System.out.println("At end");
(Apologies for the indentation not appearing in the above code)
The exception that is thrown when the Socket cannot be created is:
java.net.ConnectException
     at java.net.PlainSocketImpl.connect (Native Method)
     at java.net.PlainSocketImpl.connect (bytecode 33)
     at java.net.PlainSocketImpl.connect (bytecode 9)
     at java.net.Socket.<init> (bytecode 96)
     at java.net.Socket.<init> (bytecode 9)
     at SocketTest.main (bytecode 15)
Socket.toString(): Socket[addr=192.168.0.57/192.168.0.57,port=80,localport=1607]
Exception message: null
Has anyone else see anything like this? If so, is there a workaround? This is only a test application, the real-life application will involve a number of socket open/close operations during its lifetime, but this problem keeps occurring.
Any help would be appreciated.
thanks,
Derek

For anyone interested. The solution to this problem is located here.
http://groups.yahoo.com/group/j2me-cdc/message/57

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Hello,
I need to run a network application, that has been written and compiled with jdk1.4, on a Compaq Ipaq running Linux. I can't find a JVM that supports 1.4 API for that PDA, can you help me?
Thanks

I don't think there is one for 1.4.....1.3 is a different story.

JVM for pocket pc (iPAQ 36xx series)

Hi!
I want to develope an application for the Compaq iPaq with the operating system Windows CE 3.0. The application must be written in Java. Does anybody know a Java Virtual Machine which works on this device properly and supports JNI or which can access the IRDa - port of the iPaq directly? It would be very nice if you could give me some hints which VM is good and where/how to get it. And is there any shell available for Windows CE 3.0 for ARM processors, that i can start programs with parameters like "java HelloWorld.class"?
kind regards, Dinesh

Hi,
well I hadn't time for testing the two other IDEs, so I can't give you any recommendation and I don't know anything about the bugs of the three tools.
But I can give you a list of features (of which I know):
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compile all files
compile one file
all files accessible through an drop down list
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configuration file for the wrapper
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add files
edit files
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filedialog for accessing subdirectories
3. FLM Javac Wrapper (http://www.freaklamarsch.de/javacw)
add single files
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remove files
compile all files
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set options for running files
support for multiple projects
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a guy that will try to give support and fix some bugs
Some additional information I can give.
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Wrapper 1 and 3 offers you to select the outputdirectory so that you can keep sources and classes seperate.
Wrapper 1 and 3 also have support for projects so you don't have to select all files again, when restarting the wrapper. In wrapper 1 this support is limited to one project, but you can copy the project file and achive manual support for multiple projects.
Wrapper 2 has an built in editor, which is a nice idea. For the other wrappers its the best solution, to use an external editor and an taskmanager which allows two switch easily between programs. I use DTSysView mapped to a hardware button, but I can also recomment the GigaBar.
Hope that helps and if you decide to use my version of the wrapper, please report bugs.
Hav a nice day and a lot of fun,
FReAK

How can we access network signal strength of pocket PC in java 1.1.8?

can anyone tell me if there is any way i can access the signal strength of a wireless access point by a java program for a pocket PC (Compaq iPaq)?
the iPaq only supports java 1.1.8

Hello,
I'm a french student and I have exactly the same problem as you.
It has been 3 weeks I'm searching, but I have not results.
Today, do you have the solution????? If yes, can you tell me something about that??
Thank you very much!!!
Yohan
can anyone tell me if there is any way i can access
the signal strength of a wireless access point by a
java program for a pocket PC (Compaq iPaq)?
the iPaq only supports java 1.1.8

Steps involved in writing java application on win CE

I want to develop a java application in win CE platform for a handheld device.
1. What are all the steps involved.
2. Is there any simulator available for win CE so that I can run my java application.
Advance thanks,
Regards,
Balasubramaniam.K.R
[email protected]

The way I developed my first app for the Compaq iPAQ
1. Install PersonalJava
2. Build app using AWT classes only (although I think SWING can be used)
3. Screen size 240 x 295 (thats what I used)
4. Compile and run on PC
5. Move to PPC (fingers crossed)
6. You may want to add an app.LNK file (kinda like a *.bat file) to setup classpath and file args
Sun has a compatibility suite you can run against your app to make sure it is PJava compliant. http://java.sun.com/products/personaljava/javacheck.html
Also make sure you don't use classes/methods that aren't supported
There is a PJava emulkation environment, but I never used it.
http://java.sun.com/products/personaljava/pj-emulation.html
...good luck

Java Browser

I am looking for a Java browser for a pJava platform - any pointers?

I was recently looking for the same...
Here is what I found:
JavaBrowser: http://www.ii.uib.no/~jeremy/sw/TheBrowser/ - This is open source and was release a long time ago (like 1996)
Ice Storm
http://www.windriver.com/products/html/icebrowser.html - This is commercial, ran so-so for me.
Espial Escape
http://www.espial.com/main/page?view=escape_48_about_web - Commercial and quite expensive. Sample apps ran so-so.
Net Clue
http://www.netcluesoft.com/ - Didn't run well for. It's commerical but not terribly expensive.
HTML browser
http://www.xs4all.nl/~griffel/java/html.html
This one's free but runs slower than JavaBrowser
JEditorPane in Swing
Swing just runs too darn slow for me and that .jar file is huge.
For my testing, I'm using a Compaq Ipaq 3635 and Jeode VM. In the end, JavaBrowser far outperformed anything else because it renders html pages incrementally, but it lacks support for many features, most importantly html tables. It was also written using Java 1.0 event models so it contains quite a bit of deprecated code.
Hope this helps,
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How to run jar files on pocket pc

hi,
I have developed a .jar file on my desktop using jdk 1.4. Now i wnat to put that one on my pocket pc(compaq iPAQ)and make it run.What are the prerequisites i need and how can i get them.Please let me know in steps as i dont know any thing about pocket pc

Hi,
following steps are to be done:
1. First of all, you must download the PersonalJava Compatibility classes, that are to be used in your classpath when compiling your application. You can do that under the following url:
http://java.sun.com/products/personaljava/pj-cc.html
2. PersonalJava classes are based on JDK 1.1.x and therefore some classes in JDK 1.4 are not compatible for our purpose. Download the PersonalJava Emulation Environment to be able to test on your desktop before running on your Pocket PC. (Another tool of interest here is JavaCheck, which allows you to check if your code is PersonalJava compatible) You find links to downloads under:
http://wwws.sun.com/software/communitysource/personaljava/download.html
3. Now you are ready to install a JVM on your PocketPC. You will surely find one on your Compaq-CD (JeodeVM).
4. Write a .lnk file to be able to execute your app by only clicking once in a file on your Pocket PC. Example: your jar file is named demo.jar and is placed on your PDA under "My Documents". You main class within the JAR fie is called MyDemo. Now here is the content for the corresponding example.lnk:
18#"\Windows\evm.exe" -cp "\My Documents\demo.jar" MyDemo
Place the .lnk file whereever you want on your PDA (observe that we use absolute paths).
Hope that helps.
Have a nice day.

When do you anticipate having a driver or driver library available for developing a Windows CE driver for the NI-4050

We would like to develop an application for the Oil/Gas market utilizing the NI-4050 in Compaq IPAQ devices running Windows CE.

NI does have C source code available to program the NI-4050 using register level programming (RLP) in Windows CE. If you are a proficient C programmer and have some experience doing RLP and/or driver level development, you can use this code to access and program the 4050 in Windows CE. Contact your local NI sales person to receive a copy of this code.
Christian Loew, CLA
Principal Systems Engineer, National Instruments
Please tip your answer providers with kudos.
Any attached Code is provided As Is. It has not been tested or validated as a product, for use in a deployed application or system,
or for use in hazardous environments. You assume all risks for use of the Code and use of the Code is subject
to the Sample Code License Terms which can be found at: http://ni.com/samplecodelicense

8i Lite and Pocket PC StrongARM support

Would anyone know or heard rumors of when 8i Lite will support the Pocket PC/StongARM (ala Compaq iPaq)?
Currently the 4.0 version only supports MIPS/SH3 per the documentation:
Windows CE device
7 Windows CE 2.0 or higher
7 SH-3 or MIPS processor (other processors supported soon)
7 Handheld PC, Handheld PC Pro, or Palm-size PC Pro form factor

Paul
Not sure what exactly you are asking for, as the original topic for this thread was regarding .NET compact framework.
You cannot use .NET in plan c/c++ applications, you need to use managed C++.
If your existing application uses the ODBC APIs directly, then you should have no problem moving the PPC2002 application to the PPC2003 device, provided that the devices use the same chipset.
Olaf

Which should I use, PersonalJava, J2ME with CDC or J2ME with CLDC?

I want to write a program, which can run on Pocket PC (Compaq ipaq)?
And I need the support of double?
What should I do?
Who can help me please? Thanks!

It depends which runtime you are using (VM) and what you want your program to do.
I don't think the iPAQ has native support for floating point arithmetic, so any implementation will do all the calculations in software anyway.

Compaq iPAQ h1945

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