JAVA Stored Procedure

I am trying to create a java stored procedure; however, when I run it I get
an error. 
Has anyone created a stored procedure in java? 

I am on V5R2 and have placed the class file in
"/QIBM/UserData/OS400/SQLLib/Function/".
Also the reason code 5 means (I think ) "Cannot establish default context";
however, I have no idea what that phrase actually means.

This is the create procedure statement:
                                                               
CREATE PROCEDURE lbucmusr/SYSTEMDOWN ()              
  LANGUAGE JAVA PARAMETER STYLE JAVA NOT FENCED             
 EXTERNAL NAME 'storedprocs.getsystemstate';

This is the java code:

import java.sql.*;

public class storedprocs {
  public static void getsystemstate()
   throws SQLException, Exception
   {
     String down="J";
     if( down.equals( "J" ) )
       down="E";
   }
}    

This is the error I get when I call the procedure:
Message ID . . . . . . :   SQL4304       Severity . . . . . . . :   30

Message type . . . . . :   Diagnostic

Date sent  . . . . . . :   04/01/04      Time sent  . . . . . . :   08:33:28

 

Message . . . . :    Java stored procedure or user-defined function

  SYSTEMDOWN, specific name  could not load Java class storedprocs for
reason  
  code 5.

Cause . . . . . :   The Java class given by the EXTERNAL NAME clause of a

  CREATE PROCEDURE or CREATE FUNCTION statement could not be loaded. The

  reason codes and their meanings follow:

    1 -- The class was not found on the CLASSPATH.

    2 -- The class did not implement the required interface

  ("com.ibm.db2.app.StoredProc" or "com.ibm.db2.app.UDF") or lacked the Java

  "public" access flag.

    3 -- The default constructor failed or was unavailable.

Recovery  . . . :   Ensure that the compiled ".class" file is installed in
the 
CLASSPATH, for example under "/QIBM/UserData/OS400/SQLLib/Function". Ensure
it implements the required Java interfaces and is "public".