JVM for pocket pc (iPAQ 36xx series)

Question

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

Answer 1

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):
1. MobileMikes "JAVA COMPILER PE" (http://personal.inet.fi/koti/mobilemike/java.html)
Add and remove files
compile all files
compile one file
all files accessible through an drop down list
display memory usage
configuration file for the wrapper
support for a single project (you have to copy one file for use of different projects)
information about compiling midlets
2. IDE for Personal Java on the iPAQ (http://www.angelfire.com/linux/jfernquest/mobileprog/pjavaide.html)
add files
edit files
compile one file
filedialog for accessing subdirectories
3. FLM Javac Wrapper (http://www.freaklamarsch.de/javacw)
add single files
add all java files from one directory
remove files
compile all files
set options for compiling
run selected file (this has some problems)
set options for running files
support for multiple projects
filedialog for accessing subdirectories
a guy that will try to give support and fix some bugs
Some additional information I can give.
The filedialog of the Pocket PC doesn't support access to subdirectories, so you are busted when you want select files from packages, or if you want to structure your project into subdirectories.
So you should use wrapper 2 or 3 for that.
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