B4J Question B4J Serial USB program terminates on serial Open.

[Gary Miyakawa]

I'm working on a program that controls a camera using VISCA commands over a USB/Serial interface. In my situation, (Windows 8.1) the COM port that is showing up is COM3.

If I run the program from the Debugger/Release/Java -jar it works fine BUT if I install it (using B4JPackager to create the install package) and I then try to run it, the program terminates (with NO error messages that I can see) on the "myserial.open("COM3").

This command is inside a TRY/Catch and the catch never triggers. When I run it from the Command line (java -jar <pgm.jar>) it runs fine...

Are there other logs I can grab to see what is going on ? I put Log statements all the way thru the code to figure where it's apparently aborting...

Any suggestions?

Thanks,

Gary Miyakawa

 

[Erel]

1. Find the app jar and run it from the command line with java -jar <your jar>. It will allow you to see the logs.

2. My guess is that you will need to build the installer with 32 bit Java.

 

[Gary Miyakawa]

Erel,

Thank you for the reply.

1. I've run the program directly from the command line and it runs without a problem...

2. If I was having an installer problem (32 vs 64) wouldn't that stop it from running from the command line too?


I'm going to keep playing with it to see if I can figure it out.

Cheers,

Gary Miyakawa

 

[Erel]

If I was having an installer problem (32 vs 64) wouldn't that stop it from running from the command line too?

It depends on the default Java installed. Run java -version from the command line to check the default Java version.