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  1.  Home
  2. JAVA400-L
  3. February 2007

RE: RUNJVA problems

Mike,

I hope I have tihs correct - you have your directories as follows:

-Root File System
-QIBM
   -ProdData
       -Java400
            -lockBox
               ConnectDB2.class
               ConnectDB2.java
               UpLoadLockBox.class
               UpLoadLockBox.java

Hello.class exists within the Java400 folder.
Jt400.jar exists within the Java400 folder.

You ran this successfully:
RUNJVA CLASS(Hello) CLASSPATH('/QIBM/ProdData/Java400') PROP((java.version '1.4')) OPTION(*NONE)
You then: exported from WDSC to /QIBM/ProdData/Java400/lockBox your java programs. UploadLockBox and ConnectDB2 and copied jt400.jar to /QIBM/ProdData/Java400
Then: You tried to run this command: RUNJVA CLASS(UploadLockBox) CLASSPATH('/QIBM/ProdData/Java400/lockBox:/QIBM/ProdData/Java400/jt400.jar') PROP((java.version '1.4')) OPTION(*NONE) 

and get: java.lang.NoClassDefFoundError
Question: Is your class in a package? If yes, and th package name is lockBoxc then your class is really called lockBox.UploadLockBox. If so, then you need to include the directory which contains the directory "lockBox" in your class path not the directory which contains your class file.
The class loader locates classes by appending the full packaged name to the classpath entries and looking in the file system for the .class object. If your class has a package name of lockBox then it wont be found unless you include /QIBM/ProdData/Java400 in your classpath (in place of /QIBM/ProdData/Java400/lockBox). 

Example - for a class within the following package: com.package.name
You would need to place that class in a directory structure of:-
- com
  - package
     - name
Your class would go into name. You then point the classpath to the parent directory of com OR zip them all into a jar file and point the classpath to the directory which contains the jar file. This way, the classpath PLUS the full packaged name will locate the directory which contains your class. It can then be loaded. 

This may or may not help. I hope it does.

Cheers

Larry Ducie

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