I have set CLASSPATH and PATH environment variable. And it run
successful..Thanks.

Now, I am facing another trouble. I have installed java
communications API (commapi) version 2. (download from SUN website).
I have followed the installation guide.
But when I run a sample code, a message 'No such ports found!' shown.

It seem the sample code didn't detect serial port. But I am sure I
have COM1 on my PC. I am using windows 2000 server.

May be you have some experience in using java commapi, or Any body
can help me?