Troubles with Java Communications API & BlueJ
From: Sam Pen (lelino_at_vizzavi.it)
Date: 03/19/04
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Date: Fri, 19 Mar 2004 21:25:17 +0000 (UTC)
I've installed the Java Communication API because I want to make a
program that communicate with the Serial Port.
I've tried one of the sample program in the Java Communication API
(SerialDemo)
When I try to call the method main() I get the following message "Caught
java.lang.NullPointerException: name can't be null while loading driver
com.sun.comm.Win32Driver" and no ports are detected.
If I also try an abstract method of one of the class of Java
Communication API, CommPortIdentifier.getPortIdentifiers(), with
Tools/Use Library Class... I receive the same error .
If I run the program from the consolle typing "java SerialDemo"
everything is ok, I mean that I don't get any error and all the serial
ports are detected and everything is really OK.
I give you other useful informations:
Windows95;
JDK1.4.0_01;
Bluej 1.3.5;
C:\j2sdk1.4.0_01;
C:\Programmi\BlueJ;
Thanks to anyone who will help me.
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