Another JNI, C ++, DLL, UnsatisfiedLinkError <Native Method>

Question

I searched for 2 days and no solution could help me, so we go again:

How to fix UnsatisfiedLinkError ... in JNI?

So here is my java code:

package org.lingenio.util;

import java.util.*;

public class PTAPIWrapperForOmegaT {

    private native String translateWithPTAPI(String sentence);

    private native void test();

    public PTAPIWrapperForOmegaT(String sentence) throws Exception{
        System.out.println(sentence);
        test();     
    }

    static {
        System.load("C:/Users/michael/Desktop/OmegaT/OmegaT2.3_src/native/PTAPIWrapperForOmegaT.dll");
    }
}

And here is my C ++ code:

    #include <iostream>
    #include <windows.h>
    #include <jni.h>
    #include "PTAPIWrapperForOmegaT.h"

    using namespace std;

    JNIEXPORT jstring JNICALL Java_PTAPIWrapperForOmegaT_translateWithPTAPI(JNIEnv *env, jobject obj, jstring sentence)
    {
/* stuff */
    }

    JNIEXPORT void JNICALL Java_PTAPIWrapperForOmegaT_test(JNIEnv *, jobject)
    {
        cout << "This comes from PTAPIWrapperForOmegaT.cpp test();" << endl;
    }


    int main(){
        return 0;
    }

And the header file:

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

#ifndef _Included_PTAPIWrapperForOmegaT
#define _Included_PTAPIWrapperForOmegaT
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     PTAPIWrapperForOmegaT
 * Method:    translateWithPTAPI
 * Signature: (Ljava/lang/String;)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_PTAPIWrapperForOmegaT_translateWithPTAPI
  (JNIEnv *, jobject, jstring);

/*
 * Class:     PTAPIWrapperForOmegaT
 * Method:    test
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_PTAPIWrapperForOmegaT_test
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

and how I create it:

call g++ -Wl,--add-stdcall-alias -c -DBUILDING_EXAMPLE_DLL -I G:/Software/Java/jdk1.7.0_01/include -I G:/Software/Java/jdk1.7.0_01/include/win32 PTAPIWrapperForOmegaT.cpp
call g++ -shared -Wl,-kill-at -o PTAPIWrapperForOmegaT.dll -I G:/Software/Java/jdk1.7.0_01/include -I G:/Software/Java/jdk1.7.0_01/include/win32 PTAPIWrapperForOmegaT.cpp

and finally the error:

10211: Error: Uncatched exception in thread [Thread-14] 
10211: Error: java.lang.UnsatisfiedLinkError: org.lingenio.util.PTAPIWrapperForOmegaT.test()V 
10211: Error:   at org.lingenio.util.PTAPIWrapperForOmegaT.test(Native Method) 
10211: Error:   at org.lingenio.util.PTAPIWrapperForOmegaT.<init>(PTAPIWrapperForOmegaT.java:13) 
10211: Error:   at org.omegat.core.machinetranslators.LingenioTranslate.translate(LingenioTranslate.java:32) 
10211: Error:   at org.omegat.core.machinetranslators.BaseTranslate.getTranslation(BaseTranslate.java:64) 
10211: Error:   at org.omegat.gui.exttrans.MachineTranslateTextArea$FindThread.search(MachineTranslateTextArea.java:122) 
10211: Error:   at org.omegat.gui.exttrans.MachineTranslateTextArea$FindThread.search(MachineTranslateTextArea.java:102) 
10211: Error:   at org.omegat.gui.common.EntryInfoSearchThread.run(EntryInfoSearchThread.java:85) 

I don't know exactly about these two g ++ lines here, I think the second one will be enough, but some tutorials may have suggested another line too, and I saved it.

I am on Windows 7 using MingW and the latest Java (1.7xxx, I believe).

Any help is appreciated, I suspect the error is compilation, but I just don't know how this comes from here.

EDIT

dll DependencyWalker, , , .cpp. , Java Wrapper , .. Test(). , ? -, JNI , , ?

Answer 1

. , . , , ..:

JNIEXPORT jstring JNICALL Java_PTAPIWrapperForOmegaT_translateWithPTAPI
  (JNIEnv *, jobject, jstring);

Java , :

package org.lingenio.util;

, JNI , , :

JNIEXPORT jstring JNICALL Java_org_lingenio_util_PTAPIWrapperForOmegaT_translateWithPTAPI(JNIEnv *env, jobject obj, jstring sentence)

, , . , , Java-, . , . !