java jni issue - java.lang.UnsatisfiedLinkError

also put it in: java.library.path to see if it can fix the problem.

also
export LD_LIBRARY_PATH java.library.path
 

I've checked everything and tried the suggestions above, but still get the same errors.

Well, then move to the next checks :-)

UnsatisfiedLinkError usually occurs when:
--> the library can't be found (not the case),
--> native function declarations aren't what they should be (most likely this is the reason)
--> a C compiler has mangled the exported names of functions in the library (check the lib with nm)

I'm just gonna lay out my setup and my code and see if you see anything.

*********** MyTestCore.java **************

package com.Tester.MyTest;

public class MyTestCore {
      
      private native String Function1(String inputValues);
      private native void Load(String filePath);
      private native long Function2(String inputA, String inputB);
      
      public MyTestCore (String filePath)
      {
            this.Load(filePath);  //throws the error here saying it can't find Load
      }
      
      public String RunFunction1(String inputValues)
      {
            return this.Function1(inputValues);
      }
      
      public double RunFunction2(String inputA, String inputB)
      {
            return this.Function2(inputA,inputB);
      }

      static
      {
            System.out.println(System.getProperty("java.library.path"));
            System.loadLibrary("TestCore");      
      }
}

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

#ifndef _Included_MyTestCore
#define _Included_MyTestCore
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     MyTestCore
 * Method:    Function1
 * Signature: (Ljava/lang/String;)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_MyTestCore_Function1
  (JNIEnv *, jobject, jstring);

/*
 * Class:     MyTestCore
 * Method:    Load
 * Signature: (Ljava/lang/String;)V
 */
JNIEXPORT void JNICALL Java_MyTestCore_Load
  (JNIEnv *, jobject, jstring);

/*
 * Class:     MyTestCore
 * Method:    Function2
 * Signature: (Ljava/lang/String;Ljava/lang/String;)J
 */
JNIEXPORT jlong JNICALL Java_MyTestCore_Function2
  (JNIEnv *, jobject, jstring, jstring);

#ifdef __cplusplus
}
#endif
#endif
********************************

************    TestCore.cpp **************

#include <iostream>
#include <jni.h>
#include "MyTestCore..h"

using namespace std;

JNIEXPORT jstring JNICALL Java_MyTestCore_Function1(JNIEnv *env, jobject obj, jstring inputValue)
{
  //some code
}

JNIEXPORT void JNICALL Java_MyTestCore_Load(JNIEnv *env, jobject obj, jstring filePath)
{
      //some code
}

JNIEXPORT jlong JNICALL Java_MyTestCore_Function2 (JNIEnv *env, jobject, jstring inputA, jstring inputB)
{
      //some code
}
***********************************************

One thing I thought might be the problem was: Where I call System.loadLibrary("TestCore"); I had the library named the same things as the class it was calling, "MyTestCore", however changing the name of the library name didn't change anything.

Thanks for the help.