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

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User gmcghie: This user is the primary user of his/her PC. This PC has not had its registry entries cleaned up for a long time. Starting the Java application from the Windows command line with the supplied parameters, the program is executed and makes the initial connection with the R/3 backend. When the R/3 system sends back a request to start the GUI session, the SAP Logon is executed and opens on the PC. Nothing seems to happen after this.

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JCoException eDest: (136)com.sap.conn.jco.JCoException: (136) JCO_ERROR_ILLEGAL_STATE: Launching SAP GUI failed, though it was requested (error message: Communication with SAPGUI timed out)


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TYPE=A DEST=PRP USER="gmcghie" PASSWD=********** CLIENT=600 LANG=E ASHOST=10.212.120.53 SYSNR=00 TRACE=1 PCS=1 USE_SAPGUI=2


Scenario 2:
User mshin: This user is the primary user of his/her PC. This PC has had the OS re-installed on it within the last few years, hence the registry is likely more clean. Starting the Java application from the Windows command line with the supplied parameters, the program is executed and makes the initial connection with the R/3 backend. When the R/3 system sends back a request to start the GUI session, the SAP Logon is executed and opens on the PC. The connection is made to Client 600 and the process ends. The screens that appear above for the other scenario are not present when the connection is successful. The log file is not included for this as it was empty because it succeeded.


Here is the connection string sent to backend for scenario 2:
TYPE=A DEST=PRP USER="mshin" PASSWD=********** CLIENT=600 LANG=E ASHOST=10.212.120.53 SYSNR=00 TRACE=1 PCS=1 USE_SAPGUI=2

I have the same issue on my PC as the first scenario.
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1. Un-installed and re-installed the SAPGui, several times with no change.
2. Compared the registry settings of SAPGui between working and non-working PCu2019s. These were essentially the same.
3. Compared the system variables between working and non-working PCu2019s. These were essentially the same.
It should also be noted that if user u2018gmcghieu2019 from scenario #1 logs into another PC, the program executes correctly (for most other PCs but not all). Finally, if user u2018mshinu2019 from scenario #2 (certain other users as well) logs into Windows on the primary PC for user u2018gmcghieu2019 from scenario #1, and user u2018gmcghieu2019 is used to connect to SAP using the Java program, the program executes correctly. It seems that this would indicate some problem with the useru2019s Windows account on certain PCs.
Why is the connection information being dropped? How is the process of opening the SAPGui on the frontend done?
Any help with this issue is greatly appreciated.
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Mark Shirkey

Created Customer Message and got answer. There were settings in Windows Registry for starting the SAP Logon Launch Pad which had to have a value of 1.

Steps involved in writing java application on win CE

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