I am trying to call native methods from a JAVA class. This JAVA class after I compiled it and created the [.h] version for it and details all the definition within the [.c] file then after.The next step followed creation of [.dll] file that I loaded with the JAVA class within the static parameters.
Now when I try to run my program, it gives me the following error :
Exception in thread "main" java.lang.UnsatisfiedLinkError: sample.HelloWorld.print()V
I don't understand as to how to map the native methods from my JAVA program?
More explanation with code :
I have a [HelloWorld.java] class file that has the native method called [print()] method declaration :
package sample;
public class HelloWorld{
public native void print();
static{
System.loadLibrary("HelloWorld");
}
}
Now, on compilation, I get the [.class] file version of it. The next I created the [.h] and [.c] file having the definition for the native method [print()] as follows :
HellWorld.c
#include<stdio.h>
#include<jni.h>
#include<windows.h>
#include "HelloWorld.h"
JNIEXPORT void JNICALL Java_HelloWorld_print
(JNIEnv * env, jobject jobj){
printf("Hello there!!!!!!");
return;
}
Now when I build this [.c] file, it generates the required [.dll] file that is needed. Everything works just fine with no errors and the message gets printed of print() method when I invoke the JAVA file.
The main problem arises when I try to call this print() method in HelloWorld.java class file from different class, Invoker.java class file. Then this generates the exception :
Exception in thread "main" java.lang.UnsatisfiedLinkError: sample.HelloWorld.print()V
I do not get why this happens so when I do it? Any suggestions?
