Call Java Method from RPG

I am trying to write a RPG program that will call a java method in a class. I 
am able to call main fine, but when i try to call fred I get a RNX0301 
"Java.lang.NoSuchMethodError: fred".  Can anyone else see what I am doing wrong?

Thanks, 

Chris


     H Thread(*SERIALIZE)
     H Dftactgrp(*NO)
     H Bnddir('QC2LE')
     d mainCall$Main   PR                  STATIC
     d                                     EXTPROC(
     d                                        *JAVA:
     d                                        'demo.MainCall':
     d                                        'main')
     d                                 O   CLASS(*JAVA:'java.lang.String')
     d                                     DIM(2)
     d                                     CONST
     d String$new      PR              O   EXTPROC(
     d                                        *JAVA:
     d                                        'java.lang.String':
     d                                        *CONSTRUCTOR)
     d                                     CLASS(
     d                                        *JAVA:
     d                                        'java.lang.String')
     d bytes                         50A   CONST VARYING
     d args            s               O   CLASS(
     d                                        *JAVA:
     d                                        'java.lang.String')
     d                                     DIM(2)
      ***************************************************************
     d mainCall$fred   PR                  STATIC
     d                                     EXTPROC(
     d                                        *JAVA:
     d                                        'demo.MainCall':
     d                                        'fred')

      ***************************************************************
     D System          PR            10I 0 ExtProc('system')
     D  CmdText                        *   Value Options(*String)
      ***************************************************************
      /free
       args(1) = String$new('Test String 1');
       args(2) = String$new('Test String 2');
       MainCall$main(args);
       system('dlyjob (2)');

       MainCall$fred();
       system('dlyjob (2)');

       *inlr = *on; 
**********************************************************************************
package demo;

public class MainCall {
        public static void main(String[] args) {
                for (int i = 0; i < args.length; i++) {
                        System.out.println("Parameter " + i + " " + args[i]);
                }
        }

        public static void fred() {
                System.out.println("Fred");
        }

}
**********************************************************************************

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