Javax comm problems

Hi,
I am trying to communicate with the communication ports using javax comm API through an applet.
I am using Java 1.3.1.
It gives me the exception:
java.lang.ClassNotFoundException:javax.comm.commPortIdentifier
I run the same program not using the applet , it runs fine.(i.e.recognises the ports etc)
i tried to using a signed applet for the communication and still the exception is raised.
All the files like comm.jar and properties file and also windriver are located in the reqd locations.else my program would not have run without using the applet.
Can someone suggest what could be causing this problem
Thanks
Sai

I am having the same problems with this javax.comm package. I am using Java 1.3.1_01 under WIN2K. I checked the hardware profile, and it listed my serial ports. I also have a palmpilot which communicates with this serial port, and it works fine as well.
I tryed installing it two different ways:
1.)
installed it as if I was using jdk1.1.x
putting the comm.jar package in the <jdkroot>/lib dir
putting the properties file in the <jdkroot>/lib dir
putting the dll in the <jdkroot>/bin dir
adding <jdkroot>/lib/comm.jar to the classpath.
While this did not give me a runtime error, it would not recognize any of my serial ports.
2.)
installed it according to the jdk1.2 documentation
comm.jar -> <jdkroot>/jre/lib/ext/ dir
properties -> <jdkroot>/jre/lib
dll -> <jdkroot>/jre/bin
not altering the path
This gave me the following runtime error:
java.lang.NoClassDefFoundError: javax/comm/CommPortIdentifier
at VirtualGPSConsoleApp.main(VirtualGPSConsoleApp.java:27)
Exception in thread "main"
Process VirtualGPSConsoleApp exited abnormally with code 1
Please let me know if you make any headway.
Thank you,
[email protected]

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