I have been trying...but still failed! Please help...

Question

Here is my java code:
public class BPUSBFinger200 {
  private final static BPUSBFinger200 instance = new BPUSBFinger200();
  static {
    System.loadLibrary("lib/BPUSBFinger200");
  private BPUSBFinger200() {
  public static BPUSBFinger200 getInstance() {
    return instance;
  public static native void getFeatureFromFingerReader200(String
      fingerPrintImageFile, String fingerPrintFeatureBinaryFile);
  public static void main(String arg[]) {
    BPUSBFinger200 instance = BPUSBFinger200.getInstance();
    instance.getFeatureFromFingerReader200("image.bmp", "feature.bin");
}My autogenerated header file:
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class BPUSBFinger200 */
#ifndef _Included_BPUSBFinger200
#define _Included_BPUSBFinger200
#ifdef __cplusplus
extern "C" {
#endif
/* Inaccessible static: instance */
* Class:     BPUSBFinger200
* Method:    getFeatureFromFingerReader200
* Signature: (Ljava/lang/String;Ljava/lang/String;)V
JNIEXPORT void JNICALL Java_BPUSBFinger200_getFeatureFromFingerReader200
  (JNIEnv *, jclass, jstring, jstring);
#ifdef __cplusplus
#endif
#endifHere is my c file, generated by vc++ 6 and added with my codes:
// BPUSBFinger200.cpp : Defines the entry point for the DLL application.
#include "stdafx.h"
#include <jni.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream.h>
#include "BPUSBFinger200.h"
#include "bpusb200finger.h"
#define   W          352
#define   L          288
#define   BUFFERSIZE          W*L
#define   FEATUREBUFFERSIZE          0x1200
#define   FILEHEADSIZE          0x436
static  unsigned  char  data[FILEHEADSIZE]={
0x42, 0x4d, 0x36, 0x30, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x04, 0x00, 0x00, 0x28, 0x00,
0x00, 0x00, 0x60, 0x01, 0x00, 0x00, 0x20, 0x01, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x2c, 0x01, 0x00, 0x74, 0x12, 0x00, 0x00, 0x74, 0x12, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x02, 0x02,
0x02, 0x00, 0x03, 0x03, 0x03, 0x00, 0x04, 0x04, 0x04, 0x00, 0x05, 0x05, 0x05, 0x00, 0x06, 0x06,
0x06, 0x00, 0x07, 0x07, 0x07, 0x00, 0x08, 0x08, 0x08, 0x00, 0x09, 0x09, 0x09, 0x00, 0x0a, 0x0a,
0x0a, 0x00, 0x0b, 0x0b, 0x0b, 0x00, 0x0c, 0x0c, 0x0c, 0x00, 0x0d, 0x0d, 0x0d, 0x00, 0x0e, 0x0e,
0x0e, 0x00, 0x0f, 0x0f, 0x0f, 0x00, 0x10, 0x10, 0x10, 0x00, 0x11, 0x11, 0x11, 0x00, 0x12, 0x12,
0x12, 0x00, 0x13, 0x13, 0x13, 0x00, 0x14, 0x14, 0x14, 0x00, 0x15, 0x15, 0x15, 0x00, 0x16, 0x16,
0x16, 0x00, 0x17, 0x17, 0x17, 0x00, 0x18, 0x18, 0x18, 0x00, 0x19, 0x19, 0x19, 0x00, 0x1a, 0x1a,
0x1a, 0x00, 0x1b, 0x1b, 0x1b, 0x00, 0x1c, 0x1c, 0x1c, 0x00, 0x1d, 0x1d, 0x1d, 0x00, 0x1e, 0x1e,
0x1e, 0x00, 0x1f, 0x1f, 0x1f, 0x00, 0x20, 0x20, 0x20, 0x00, 0x21, 0x21, 0x21, 0x00, 0x22, 0x22,
0x22, 0x00, 0x23, 0x23, 0x23, 0x00, 0x24, 0x24, 0x24, 0x00, 0x25, 0x25, 0x25, 0x00, 0x26, 0x26,
0x26, 0x00, 0x27, 0x27, 0x27, 0x00, 0x28, 0x28, 0x28, 0x00, 0x29, 0x29, 0x29, 0x00, 0x2a, 0x2a,
0x2a, 0x00, 0x2b, 0x2b, 0x2b, 0x00, 0x2c, 0x2c, 0x2c, 0x00, 0x2d, 0x2d, 0x2d, 0x00, 0x2e, 0x2e,
0x2e, 0x00, 0x2f, 0x2f, 0x2f, 0x00, 0x30, 0x30, 0x30, 0x00, 0x31, 0x31, 0x31, 0x00, 0x32, 0x32,
0x32, 0x00, 0x33, 0x33, 0x33, 0x00, 0x34, 0x34, 0x34, 0x00, 0x35, 0x35, 0x35, 0x00, 0x36, 0x36,
0x36, 0x00, 0x37, 0x37, 0x37, 0x00, 0x38, 0x38, 0x38, 0x00, 0x39, 0x39, 0x39, 0x00, 0x3a, 0x3a,
0x3a, 0x00, 0x3b, 0x3b, 0x3b, 0x00, 0x3c, 0x3c, 0x3c, 0x00, 0x3d, 0x3d, 0x3d, 0x00, 0x3e, 0x3e,
0x3e, 0x00, 0x3f, 0x3f, 0x3f, 0x00, 0x40, 0x40, 0x40, 0x00, 0x41, 0x41, 0x41, 0x00, 0x42, 0x42,
0x42, 0x00, 0x43, 0x43, 0x43, 0x00, 0x44, 0x44, 0x44, 0x00, 0x45, 0x45, 0x45, 0x00, 0x46, 0x46,
0x46, 0x00, 0x47, 0x47, 0x47, 0x00, 0x48, 0x48, 0x48, 0x00, 0x49, 0x49, 0x49, 0x00, 0x4a, 0x4a,
0x4a, 0x00, 0x4b, 0x4b, 0x4b, 0x00, 0x4c, 0x4c, 0x4c, 0x00, 0x4d, 0x4d, 0x4d, 0x00, 0x4e, 0x4e,
0x4e, 0x00, 0x4f, 0x4f, 0x4f, 0x00, 0x50, 0x50, 0x50, 0x00, 0x51, 0x51, 0x51, 0x00, 0x52, 0x52,
0x52, 0x00, 0x53, 0x53, 0x53, 0x00, 0x54, 0x54, 0x54, 0x00, 0x55, 0x55, 0x55, 0x00, 0x56, 0x56,
0x56, 0x00, 0x57, 0x57, 0x57, 0x00, 0x58, 0x58, 0x58, 0x00, 0x59, 0x59, 0x59, 0x00, 0x5a, 0x5a,
0x5a, 0x00, 0x5b, 0x5b, 0x5b, 0x00, 0x5c, 0x5c, 0x5c, 0x00, 0x5d, 0x5d, 0x5d, 0x00, 0x5e, 0x5e,
0x5e, 0x00, 0x5f, 0x5f, 0x5f, 0x00, 0x60, 0x60, 0x60, 0x00, 0x61, 0x61, 0x61, 0x00, 0x62, 0x62,
0x62, 0x00, 0x63, 0x63, 0x63, 0x00, 0x64, 0x64, 0x64, 0x00, 0x65, 0x65, 0x65, 0x00, 0x66, 0x66,
0x66, 0x00, 0x67, 0x67, 0x67, 0x00, 0x68, 0x68, 0x68, 0x00, 0x69, 0x69, 0x69, 0x00, 0x6a, 0x6a,
0x6a, 0x00, 0x6b, 0x6b, 0x6b, 0x00, 0x6c, 0x6c, 0x6c, 0x00, 0x6d, 0x6d, 0x6d, 0x00, 0x6e, 0x6e,
0x6e, 0x00, 0x6f, 0x6f, 0x6f, 0x00, 0x70, 0x70, 0x70, 0x00, 0x71, 0x71, 0x71, 0x00, 0x72, 0x72,
0x72, 0x00, 0x73, 0x73, 0x73, 0x00, 0x74, 0x74, 0x74, 0x00, 0x75, 0x75, 0x75, 0x00, 0x76, 0x76,
0x76, 0x00, 0x77, 0x77, 0x77, 0x00, 0x78, 0x78, 0x78, 0x00, 0x79, 0x79, 0x79, 0x00, 0x7a, 0x7a,
0x7a, 0x00, 0x7b, 0x7b, 0x7b, 0x00, 0x7c, 0x7c, 0x7c, 0x00, 0x7d, 0x7d, 0x7d, 0x00, 0x7e, 0x7e,
0x7e, 0x00, 0x7f, 0x7f, 0x7f, 0x00, 0x80, 0x80, 0x80, 0x00, 0x81, 0x81, 0x81, 0x00, 0x82, 0x82,
0x82, 0x00, 0x83, 0x83, 0x83, 0x00, 0x84, 0x84, 0x84, 0x00, 0x85, 0x85, 0x85, 0x00, 0x86, 0x86,
0x86, 0x00, 0x87, 0x87, 0x87, 0x00, 0x88, 0x88, 0x88, 0x00, 0x89, 0x89, 0x89, 0x00, 0x8a, 0x8a,
0x8a, 0x00, 0x8b, 0x8b, 0x8b, 0x00, 0x8c, 0x8c, 0x8c, 0x00, 0x8d, 0x8d, 0x8d, 0x00, 0x8e, 0x8e,
0x8e, 0x00, 0x8f, 0x8f, 0x8f, 0x00, 0x90, 0x90, 0x90, 0x00, 0x91, 0x91, 0x91, 0x00, 0x92, 0x92,
0x92, 0x00, 0x93, 0x93, 0x93, 0x00, 0x94, 0x94, 0x94, 0x00, 0x95, 0x95, 0x95, 0x00, 0x96, 0x96,
0x96, 0x00, 0x97, 0x97, 0x97, 0x00, 0x98, 0x98, 0x98, 0x00, 0x99, 0x99, 0x99, 0x00, 0x9a, 0x9a,
0x9a, 0x00, 0x9b, 0x9b, 0x9b, 0x00, 0x9c, 0x9c, 0x9c, 0x00, 0x9d, 0x9d, 0x9d, 0x00, 0x9e, 0x9e,
0x9e, 0x00, 0x9f, 0x9f, 0x9f, 0x00, 0xa0, 0xa0, 0xa0, 0x00, 0xa1, 0xa1, 0xa1, 0x00, 0xa2, 0xa2,
0xa2, 0x00, 0xa3, 0xa3, 0xa3, 0x00, 0xa4, 0xa4, 0xa4, 0x00, 0xa5, 0xa5, 0xa5, 0x00, 0xa6, 0xa6,
0xa6, 0x00, 0xa7, 0xa7, 0xa7, 0x00, 0xa8, 0xa8, 0xa8, 0x00, 0xa9, 0xa9, 0xa9, 0x00, 0xaa, 0xaa,
0xaa, 0x00, 0xab, 0xab, 0xab, 0x00, 0xac, 0xac, 0xac, 0x00, 0xad, 0xad, 0xad, 0x00, 0xae, 0xae,
0xae, 0x00, 0xaf, 0xaf, 0xaf, 0x00, 0xb0, 0xb0, 0xb0, 0x00, 0xb1, 0xb1, 0xb1, 0x00, 0xb2, 0xb2,
0xb2, 0x00, 0xb3, 0xb3, 0xb3, 0x00, 0xb4, 0xb4, 0xb4, 0x00, 0xb5, 0xb5, 0xb5, 0x00, 0xb6, 0xb6,
0xb6, 0x00, 0xb7, 0xb7, 0xb7, 0x00, 0xb8, 0xb8, 0xb8, 0x00, 0xb9, 0xb9, 0xb9, 0x00, 0xba, 0xba,
0xba, 0x00, 0xbb, 0xbb, 0xbb, 0x00, 0xbc, 0xbc, 0xbc, 0x00, 0xbd, 0xbd, 0xbd, 0x00, 0xbe, 0xbe,
0xbe, 0x00, 0xbf, 0xbf, 0xbf, 0x00, 0xc0, 0xc0, 0xc0, 0x00, 0xc1, 0xc1, 0xc1, 0x00, 0xc2, 0xc2,
0xc2, 0x00, 0xc3, 0xc3, 0xc3, 0x00, 0xc4, 0xc4, 0xc4, 0x00, 0xc5, 0xc5, 0xc5, 0x00, 0xc6, 0xc6,
0xc6, 0x00, 0xc7, 0xc7, 0xc7, 0x00, 0xc8, 0xc8, 0xc8, 0x00, 0xc9, 0xc9, 0xc9, 0x00, 0xca, 0xca,
0xca, 0x00, 0xcb, 0xcb, 0xcb, 0x00, 0xcc, 0xcc, 0xcc, 0x00, 0xcd, 0xcd, 0xcd, 0x00, 0xce, 0xce,
0xce, 0x00, 0xcf, 0xcf, 0xcf, 0x00, 0xd0, 0xd0, 0xd0, 0x00, 0xd1, 0xd1, 0xd1, 0x00, 0xd2, 0xd2,
0xd2, 0x00, 0xd3, 0xd3, 0xd3, 0x00, 0xd4, 0xd4, 0xd4, 0x00, 0xd5, 0xd5, 0xd5, 0x00, 0xd6, 0xd6,
0xd6, 0x00, 0xd7, 0xd7, 0xd7, 0x00, 0xd8, 0xd8, 0xd8, 0x00, 0xd9, 0xd9, 0xd9, 0x00, 0xda, 0xda,
0xda, 0x00, 0xdb, 0xdb, 0xdb, 0x00, 0xdc, 0xdc, 0xdc, 0x00, 0xdd, 0xdd, 0xdd, 0x00, 0xde, 0xde,
0xde, 0x00, 0xdf, 0xdf, 0xdf, 0x00, 0xe0, 0xe0, 0xe0, 0x00, 0xe1, 0xe1, 0xe1, 0x00, 0xe2, 0xe2,
0xe2, 0x00, 0xe3, 0xe3, 0xe3, 0x00, 0xe4, 0xe4, 0xe4, 0x00, 0xe5, 0xe5, 0xe5, 0x00, 0xe6, 0xe6,
0xe6, 0x00, 0xe7, 0xe7, 0xe7, 0x00, 0xe8, 0xe8, 0xe8, 0x00, 0xe9, 0xe9, 0xe9, 0x00, 0xea, 0xea,
0xea, 0x00, 0xeb, 0xeb, 0xeb, 0x00, 0xec, 0xec, 0xec, 0x00, 0xed, 0xed, 0xed, 0x00, 0xee, 0xee,
0xee, 0x00, 0xef, 0xef, 0xef, 0x00, 0xf0, 0xf0, 0xf0, 0x00, 0xf1, 0xf1, 0xf1, 0x00, 0xf2, 0xf2,
0xf2, 0x00, 0xf3, 0xf3, 0xf3, 0x00, 0xf4, 0xf4, 0xf4, 0x00, 0xf5, 0xf5, 0xf5, 0x00, 0xf6, 0xf6,
0xf6, 0x00, 0xf7, 0xf7, 0xf7, 0x00, 0xf8, 0xf8, 0xf8, 0x00, 0xf9, 0xf9, 0xf9, 0x00, 0xfa, 0xfa,
0xfa, 0x00, 0xfb, 0xfb, 0xfb, 0x00, 0xfc, 0xfc, 0xfc, 0x00, 0xfd, 0xfd, 0xfd, 0x00, 0xfe, 0xfe,
0xfe, 0x00, 0xff, 0xff, 0xff, 0x00
BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
    return TRUE;
* Class:     BPUSBFinger200
* Method:    getFeatureFromFingerReader200
* Signature: (Ljava/lang/String;Ljava/lang/String;)[B
JNIEXPORT void JNICALL Java_BPUSBFinger200_getFeatureFromFingerReader200
     (JNIEnv * env, jclass object, jstring imageFile, jstring featureFile) {
     unsigned char *image;
     unsigned char *feature;
     const char* imageFileName = env->GetStringUTFChars(imageFile, 0);
     const char* featureFileName = env->GetStringUTFChars(featureFile, 0);
     FILE* stream;
     image=(unsigned char*)calloc(BUFFERSIZE,sizeof(unsigned char));
     feature=(unsigned char*)calloc(FEATUREBUFFERSIZE,sizeof(unsigned char));
     stream=fopen(imageFileName,"wb");
     fwrite(&data[0],sizeof(char),FILEHEADSIZE,stream);
     fclose(stream);
     GetFeatureFromFingerReader200(image, feature); 
     stream=fopen(imageFileName,"a+b");
     fwrite(image,sizeof(char),BUFFERSIZE,stream);
     fclose(stream);
  /////store  the  features  into  the feature file;
     stream=fopen(featureFileName,"wb");
     fwrite(feature,sizeof(char),FEATUREBUFFERSIZE,stream);
     fclose(stream);
     env->ReleaseStringUTFChars(imageFile, imageFileName);
     env->ReleaseStringUTFChars(featureFile, featureFileName);
     free(image);
     free(feature);
};VC++ 6 compiler did not give me any error making the BPUSBFinger200.dll.
The problem occured when I run the java program.
Here is the stack trace:
java.lang.UnsatisfiedLinkError: G:\Java_Projects\bpusbfinger200\lib\BPUSBFinger200.dll: Can't find dependent libraries
     at java.lang.ClassLoader$NativeLibrary.load(Native Method)
     at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1560)
     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1485)
     at java.lang.Runtime.loadLibrary0(Runtime.java:788)
     at java.lang.System.loadLibrary(System.java:834)
     at com.ebs.bpusbfinger.BPUSBFinger200.<clinit>(BPUSBFinger200.java:7)
Exception in thread "main"
I have a sample program that was written in C++ by the manufacturer of the device "Finger Print Scanner", and the source code and all the project files in VC++ 6 was included. It ran very well. So I copied all the dll be it the ones that I needed or not to my lib/ dir, but my java program still didn't run.
It looked to me like I was missing some dll, so I checked with vc++ 6 and located the "external dependencies" part at the file view browser, and found out three header files: "bpusb200finger.h", "jni.h", "jni_md.h" and "basetsd.h". Did that mean anything?
I am sorry because this problem might have been solved by someone already, but I have tried searching the forum and tried the solution proposed by the community but I still can't get my java program works.
Can someone help me? It is very urgent.....
Thanks.
Chris

Answer 1

Thanks for the quick response.
Yes, now I got it solved, but new exception caugnt:
java.lang.UnsatisfiedLinkError: getFeatureFromFingerReader200
     at com.ebs.bpusbfinger.BPUSBFinger200.getFeatureFromFingerReader200(Native Method)
     at com.ebs.bpusbfinger.BPUSBFinger200.main(BPUSBFinger200.java:29)
Exception in thread "main"
here is the bpusb200finger.h:
/*#ifndef __Bpusb200finger_h
#define __bpusb200finger_h
/* Revision Number 3.0.0.0 */
/* ***** Copyright 2001-2002 BioPass, Inc. **********************/
/* ***** All rights reserved. BioPass assumes no liability for **/
/* ***** errors in any of the software it provides. ***************/
#pragma once
// VeriFinger ver3.3 version
#define DLL_VER_33 MAKELONG(WORD(3),WORD(3))
#define PASCAL      __stdcall
#ifndef NULL
#ifdef  __cplusplus
#define NULL    0
#else
#define NULL    ((void *)0)
#endif
#endif
#define  FALSE   0  
#define  TRUE    1  
typedef unsigned long  DWORD;
typedef unsigned short  WORD; 
typedef unsigned char BYTE;
long PASCAL GetFeatureFromFingerReader200(unsigned char *Image, unsigned char *Feature); 
long PASCAL CheckFingerPrintFeature(unsigned char *Feature1, unsigned char *Feature2, long iOperation);
int  PASCAL  InitDevice ();
int  PASCAL  SetValue(int  value);
void  PASCAL  SettingVideoSource();
void  PASCAL  SettingVideoFormat();
long PASCAL  ASCIITOHEX(unsigned char * asciidata, unsigned char* hexdata);
long PASCAL  HEXTOASCII(unsigned char *hexdata, unsigned char* asciidata);
long PASCAL GetFeatureFromFingerReader200A(unsigned char *Image, unsigned char *Feature); 
long PASCAL GetFeatureFromFingerReader200B(unsigned char *Image, unsigned char *Feature); 
long PASCAL GetFeatureFromFingerReader200C(unsigned char *Image, unsigned char *Feature); 
long PASCAL CheckFingerPrintFeatureA(unsigned char *Feature1, unsigned char *Feature2, long iOperation);
long PASCAL CheckFingerPrintFeatureB(unsigned char *Feature1, unsigned char *Feature2, long iOperation);
long PASCAL CheckFingerPrintFeatureC(unsigned char *Feature1, unsigned char *Feature2, long iOperation);
long PASCAL GetFeatureFromFingerData(unsigned char *Image, unsigned char *Feature);
long PASCAL GetFeatureFromFingerDataA(unsigned char *Image, unsigned char *Feature);   I din't think there was anything wrong in declaring my .h file and implementing my .cpp file, but it looks to me like the BPUSBFinger200.h has a problem.
Please advice. I am beginner in JNI.
Thanks.