HelloWorld.java:
class HelloWorld
{
private native void print();
public static void main(String[] args) {
//new HelloWorld().print();
}
static {
System.loadLibrary("HelloWorld");
}
}
HelloWorld.h
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class HelloWorld */
#ifndef _Included_HelloWorld
#define _Included_HelloWorld
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: HelloWorld
* Method: print
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_HelloWorld_print
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
libHelloWorld.c
#include "jni.h"
#include <stdio.h>
#include "HelloWorld.h"
JNIEXPORT void JNICALL
Java_HelloWorld_print(JNIEnv *env, jobject obj)
{
printf("Hello World!\n");
return;
}
The java code compiled fine, this line gave me no errors (I am assuming this is the correct usage)
gcc -I C:\glassfish3\jdk\bin\include -shared libHelloWorld.c -o libHelloWorld.so
But then I try to run the java code and I get this:
Exception in Thread "main" java.lang.UnsatifiedLinkError: no HelloWorld in java.library.path
So I replaced, in the java code, the System.loadLibrary parameter with HelloWorld.h, HelloWorld.c, libHelloWorld.c, and libHelloWorld.so. Each gave me that UnsatisfiedLinkError.
My directory looks like this:
a.exe (I'd also like to know how to control the name of the resulting .exe from running c++.exe on a c++ file)
libHelloWorld.c
HelloWorld.class
HelloWorld.h.gch (No idea what that is, or how it got there)
HelloWorld.h
HelloWorld.java
libHelloWorld.so
Compiler.bat
The files are all there in that directory. jni.h is in C:\glassfish3\jdk\bin\include, so where is this UnsatifiedLinkError coming from? Thanks in advance!
