Exception in thread "main" error

Question

I have a real problem. I am trying to write a hello world program in java using native code. my java code is as follow :
class HelloWorld {
static {
System.loadLibrary("Hello.so");
private native void print();
public static void main(String[] args) {
new HelloWorld().print();
System.out.println("Good bye Hello World!!");
my native c code is as follow :
#include <jni.h>
#include <stdio.h>
#include "HelloWorld.h"
JNIEXPORT void JNICALL
print(JNIEnv *env,jobject obj) {
printf("Hello cruel world. Hope you can live through the Human Phase!.\n");
return ;
I use javac HelloWorld.java to get my HelloWorld.class file.
I use javah HelloWorld to het my HelloWorld.h file
i set my LD_LOBRARY_PATH to where my native code is.
i compile the c code using "
gcc -c -I /usr/java/j2sdk1.4.0/include -I /usr/java/j2sdk1.4.0/include/linux HelloWorld.c -o Hello.so
everything is good up to this point. But when i call java HelloWorld, i get the following error : "
Exception in thread "main" java.lang.UnsatisfiedLinkError: no Hello.so in java.library.path     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1370)
     at java.lang.Runtime.loadLibrary0(Runtime.java:773)
     at java.lang.System.loadLibrary(System.java:835)
     at HelloWorld.<clinit>(HelloWorld.java:3)
Can any one help. I am using RedHat 7.2, kernel 2.4.10-17.
Thank you
Shafi Jourabchi [email protected]

Answer 1

Thank you all who have responded. The solution to my problem was with the compile options. I was not using the right option to compile the shared lib object file.
the command i used ( and it worked ) was :
gcc -o libHello.so -shared -Wl, -soname,libHello.so -I /usr/java/j2sdk/include -I /usr/java/j2sdk/include/linux HelloWorldImp.c -static -Lc
Shafi jourabchi