Error JCo starting .jar file

Question

Dear all,
I am new to Java, but I try to implement a small application which talks to our SAP. I am working with eclipse 3.3 and I've installed JCO 2.1.8. I modified Example1 a little bit and everything works fine when I start my program within eclipse with run as->java application. I added the sapjco.jar file to the build path of my project. I also added C:\Programme\sapjco-ntintel-2.1.8 to my windows path variable and copied *.dll to system32. When I export my project as a .jar file and try to start it with
java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. -jar Jco.jar
I get the error message
java.lang.NoClassDefFoundError: com/sap/mw/jco/IMetaData
The contents of my .classpath file is:
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
     <classpathentry kind="src" path="src"/>
     <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
     <classpathentry kind="lib" path="C:/Programme/sapjco-ntintel-2.1.8/sapjco.jar"/>
     <classpathentry kind="output" path="bin"/>
</classpath>
But I can start the java program with
java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. Jco
when I am in the directory with the .class file.
Whats wrong with my .jar file?
Thanks in advance,
Rolf
Message was edited by:
        Rolf Winter

Answer 1

Hi,
thanks for your answers.
C:\Programme\sapjco-ntintel-2.1.8 containing sapjco.jar is already added to the path environment variable.
summary:
-I installed JCO in folder C:\Programme\sapjco-ntintel-2.1.8
-I copied *.dll to Windows\system32
-I added  C:\Programme\sapjco-ntintel-2.1.8 to the path environment variable
-sapjco.jar is in the building path
-<i>I can start the "normal Java .class file"</i> with java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. Jco
-I've created a jar file with the export dialog. I just followed the steps and selected the starting class "Jco".
-In the directory containing the jar file I tried to start it with the following commands
  java -cp C:\Programme\sapjco-ntintel-2.1.8\sapjco.jar;. -jar Jco.jar
  java -jar Jco.jar
but I always get the message
Exception in thread "main" java.lang.NoClassDefFoundError: com/sap/mw/jco/IMetaData
Any further ideas?
Rolf