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Unable to lis thte Comm Ports

Deepan Devadasan
Ranch Hand

Joined: Jan 25, 2007
Posts: 226

I am developing a sms server app for a demo purpose...

When I run the web within the Netbeans IDE while development there is no problem...

The problem happens only when I deploy the app in a standalone Apache Tomcat (The one thats not integrated within Netbeans)..

Please note that both the development and deployment happened on the same machine with same state...

When I try to get a list of Comm ports available on the PC it doesnt work..

I am doing this with javax.comm.CommPortIdentifier within a JSP and not a Servlet...

Meanwhile the GSM modem is connected to a local COMx port...

Please help me out in this

Theepan Thevathasan
SCJP 1.4, SCWCD 1.4, SCMAD 1.0 SCBCD 1.3, MCP(.Net Frm 2.0 App Dev Fdn)
Tapan Maru
Ranch Hand

Joined: May 08, 2006
Posts: 65

just try the following:

put comm.jar file in your <jre installation directory>/lib/ext if you are not having jdk installed. if you have jdk installed, than <jdk>/<jre>/<lib>/<ext> directory

please let me know whether you get a list or not.

I am also using comm.jar and able to display the list. The only thing is I am not using netbeans. But I dont think it should be a problem

Tapan Maru
I agree. Here's the link:
subject: Unable to lis thte Comm Ports
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