UnsatisfiedLinkError in Sun Example

Question

Hi!
I know that a lot of topics deal with this problem, but I did`nt find a way to solve my special problem.
I�m trying to run an example that I found somewhere in the www, but it fails. All the following files are in the same directory (I have set the variable LD_LIBRARY_PATH anyway), I use no packages and nothing special at all.
Here are my files:
JAVA-FILE:
public class StrLen {
     public static native int strlen(String s);
     static {
          System.loadLibrary("strlen");
     public static void main(String[] args) {
          System.out.println( strlen("R+V Wiesbaden") );
... compiled with "javac StrLen.java"
... header-File createt with "javah -jni -o strlen.h StrLen"
C-FILE:
#include <jni.h>
#include "strlen.h"
#include <stdio.h>
#include <string.h>
JNIEXPORT jint JNICALL Java_StrLen_strlen_( JNIEnv *env, jclass clazz, jstring s) {
printf("Moin Wiesbaden!\n");
return 1;
THE BATCH-FILE (for creating a dll):
bcc32 -c -IC:\Programme\Java\j2sdk1.4.0_03\include -IC:\Programme\Java\j2sdk1.4.0_03\include\win32 strlen.cpp
bcc32 -tWD strlen.obj
The problem that occurs (java StrLen) gives the following message:
"Exception in thread "main" java.lang.UnsatisfiedLinkError: strlen
at StrLen.strlen(Native Method)
at StrLen.main(StrLen.java:10)
Many thanks in advance!!!!!
Michael

Answer 1

Sorry, I forgott he header-File that�s used by strlen.cpp:
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class StrLen */
#ifndef IncludedStrLen
#define IncludedStrLen
#ifdef __cplusplus
extern "C" {
#endif
* Class: StrLen
* Method: strlen
* Signature: (Ljava/lang/String;)I
JNIEXPORT jint JNICALL Java_StrLen_strlen
(JNIEnv *, jclass, jstring);
#ifdef __cplusplus
#endif
#endif