🚀 go-pugleaf

I tried to call Native Method from JBuilder.  The example I tried is from
the
famous Java Tutorial book by Mary Campione and Kathy Walrath:

1    Write the Java code

class HelloWorld {
    public native void displayHelloWorld();

    static {
        System.loadLibrary("hello");
    }

}

class Main {
    public static void main(String[] args) {
        new HelloWorld().displayHelloWorld();
    }
}

2.    Complie the above Java code
3.    Create .h file using javah.  HelloWorld.h is created:

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class HelloWorld */

#ifndef _Included_HelloWorld
#define _Included_HelloWorld
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class:     HelloWorld
* Method:    displayHelloWorld
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_HelloWorld_displayHelloWorld
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

4.    Write the C code:

#include <jni.h>
#include "HelloWorld.h"
#include <stdio.h>

JNIEXPORT void JNICALL
Java_HelloWorld_displayHelloWorld(JNIEnv *env, jobject obj)
{
  printf("Hello world!\n");
  return;
}

5.    Create DLL using Power++:
Start Power++ using Win32 DLL as the target; add the above C code into a
default project; Build it into HELLO.DLL, HELLO.LIB.  In the MAP file, I can
see Java_HelloWorld_displayHelloWorld was exported.  Copy the DLL and LIB to
\WINNT\SYSTEM32 directory (I use NT4)

6.    Run Main.Class and alwasy get the following error:
java.lang.UnsatisfiedLinkError: displayHelloWorld
at native1.Main.main(Main.java:21)


Your advise will be highly appreciated!