Thread: calling native c code from java using JNI

hi guys im fed up with jni couldnt even execute a simple helloworld program.. here is what i did as per the instruction given in a JNI book..

STEP 1:
Creating HelloWorld.java

class HelloWorld {
	private native void print();
 
	public static void main(String[] args) {
		new HelloWorld().print();
	}
 
	static {
		System.loadLibrary("HelloWorld.dll");
	}
}

compile HelloWorld.java to get HelloWorld.class

STEP 2
Creating a jni style header

command: javah -jni HelloWorld will generate a header file HelloWorld.h

STEP 3:
Creating dll and lib files

#include <jni.h>
#include <stdio.h>
#include "HelloWorld.h"
 
JNIEXPORT void JNICALL Java_HelloWorld_print(JNIEnv *env, jobject obj)
{
	printf("Hello World!\n");
	return;
}
 
int main(int argc, char **argv)
{
	// dummy
	return 0;
}

compile with file along with the header in Visual Studio in a dll project will generate dll files

STEP 4

now i ve created a java class file header file and the library HelloWorld.dll

when i execute the java HelloWorld.class it throws the the error

Exception in thread "main" java.lang.UnsatisfiedLinkError: no HelloWorld.dll in
java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at HelloWorld.<clinit>(HelloWorld.java:9)
Could not find the main class: HelloWorld. Program will exit.


guys please help me i dont know how to fix and i followed lot of other tutorials and i get the same error