No Class Def Found Error

["wolf star" <wolfstar56@xxxxxxxxxxx>]

Hi Everyone,

I am currently involved in enhancing an AS/400 application written in RPG, 
which receives data in from a web application via data queues. The business 
has decided to make this traffic two-way, and made a unilateral decision to 
create a synchronisation service to prevent contention, accessed from the 
As/400 via an RPC module written in Java.

As the only programmer in the department to have ever written any ILE RPG, I 
was assigned to write the RPG to communicate with this Java procedure, 
something I've never done before.

The class is defined in a package as com.axa.rpc.RpcClient, held in a JAR 
file in an ifs folder on the machine.

I have used the ADDENVVAR command to set the CLASSPATH to point to the ifs 
folder, and the following RPG code to define the required method to RPG 
(sorry about  the formatting)

    D RpcClient       PR              O   EXTPROC  
(*JAVA:'com.axa.rpc.RpcClient'
    D                                     :'execute')
    D                                     STATIC
    D                                     CLASS(*JAVA:'java.lang.String')
    D s_dest                          O   CLASS(*JAVA:'java.lang.String')
    D xml_call                        O   CLASS(*JAVA:'java.lang.String')
     *
     * Call External Service using Remote Procedure Call
     * -------------------------------------------------
     *
    D str             S               O   CLASS(*JAVA:'java.lang.String')
    D str2            S               O   CLASS(*JAVA:'java.lang.String')
    D str3            S               O   CLASS(*JAVA:'java.lang.String')
     *
     * Java String Objects
     * -------------------
     *
    D makestring      PR              O   EXTPROC(*JAVA:'java.lang.String':
    D                                     *CONSTRUCTOR)
    D                                     CLASS(*JAVA:'java.lang.String')
    D parm                       65535A   CONST VARYING
     *
     * Construct a Java string using input parameter
     * ---------------------------------------------

 and the following statement to call the method;

   C                   eval      str  = makestring(xml_in)
    C                   eval      str2 = makestring(output)
    C                   eval      str3 = makestring('mainframe')
    C                   eval      str2 = RpcClient(str3 :str)
    C                   eval      xml_out = makealpha(str2)

The calls to the String constructor, and the makealpha (String.getBytes) 
work fine, but the call to RpcClient gives Class Def Not Found error.

I'm sure its an environmental thing, but any solutions would be gratefully 
received.

Regards,
Neil

_________________________________________________________________
MSN Instant Messenger now available on Australian mobile phones. Go to  
http://ninemsn.com.au/mobilecentral/hotmail_messenger.asp