Calling java Class from RPG using JNI

From: Roman Prigozhin (prigozhinroman_at_yahoo.com)
Date: 03/31/04 

Date: 30 Mar 2004 17:27:13 -0800

I'm trying to call my java methods from RPG, everything works but
passing string variables.
Probably I have some issues with data conversion.
Error I'm getting is :

Message . . . . : Java exception received when calling Java method
(C G D
  F).
Cause . . . . . : RPG procedure TEST in program ROMAN/TEST received
Java
  exception "java.lang.NoSuchMethodError: testStuff" when calling
method
  "testStuff" with signature "([B)I" in class "MyClass".

But prototype of the java function is correct :

 Compiled from MyClass.java
 public class MyClass extends java.lang.Object
     public MyClass();
         /* ()V */
     public static int testStuff(byte[]);
         /* ([B)I */

Here is my java class :

public class MyClass {
                                                       
 public static int testStuff( byte[] test ){
     int size =0;
     size = test.length;
   return size;
  }
}

Here is the Prototype :

D testStuff PR 10i 0 ExtProc(*JAVA:

D 'MyClass':

D 'testStuff')

D Static

D teststr 30A

And here is the RPG programm :

H DftActGrp(*NO) ActGrp(*CALLER)

/Copy *LibL/RPGSRC,TEST1PR

D first S 10i 0 Inz(23)

D second S 10i 0 Inz(18)

D sum S 10i 0

D testStr S 30A

/Free

// call my home grown method

testStr = 'roman';

sum = testStuff(testStr);

Dsply testStr;

/End-Free

Thanks,
Roman
www.aadt.com