problem in calling the class from jess (in CLASSPATH)

[Tarfa man]

Hi all
good day ,

I am working in expert system by jess rule engine ..

I faced this problems in jess, I can't access to my class in (Java) by jess
I spend slots of time to solve this problem. but I am failed.
Hint: jess is like command line ,so I need my system point to my class to jess

this error message from jess

Jess reported an error in routine defclass
	while executing (defclass dim DimmerSwitch).
  Message: Class not found:.
  Program text: ( defclass dim DimmerSwitch )  at line 17 in file

Nested exception is:
DimmerSwitch

normally jess deals with other class in java without problems but here is something for CLSSPATH place..


# I put my class and Jess.jar to one jar file and I write the full path of my class to CLASSPATH in my system(did not work)
#I write the full path of my class only (did not work)

Could any one please see my problem ? the problem in Java and classpath
all my class working normally in java..

My system is Win 7
Eclipse Java EE IDE
Jess 7
thank you

[Tarfa man]

No one understand this problem ...

[Ernest Friedman-Hill]

You're right to say that this is simply a classpath issue, but I have to confess that your description of what you have tried makes no sense to me. If the file DimmerSwitch.class is in the directory

c:\Documents and Settings\fred\JessCode

and jess.jar is at

c:\Documents and Settings\fred\Jess71p2\jess.jar

then a command line to launch the Jess command line so that it had access to this class would be

java -cp "c:\Documents and Settings\fred\JessCode;c:\Documents and Settings\fred\Jess71p2\jess.jar" jess.Main

In this regard, there's nothing special about Jess; this is just how you'd use any Java code together with a Java library in a jar file.