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Message: [QUOTE="Guest, post: 535913"] hi all, it just isn't working for me! i am attempting a very simple program that calls a native method. i am pretty sure i am following all the correct steps, but it still doesn't work. error message is: Exception in thread "main" java.lang.UnsatisfiedLinkError: no Native in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1403) at java.lang.Runtime.loadLibrary0(Runtime.java:788) at java.lang.System.loadLibrary(System.java:832) at Native.<clinit>(Native.java:21) step 1: write and compile the class public class Native { public Native() { int x; int y; System.out.println("about to call calc"); x = calc(10, 30); y = calc(11, 40); System.out.println("x is " + x); System.out.println("y is " + y); } native int calc(int x, int y); public static void main(String[] args) { new Native(); } static { System.out.println("about to load library ..."); System.out.println(System.getProperty("java.library.path")); System.loadLibrary("Native"); System.out.println("library loaded ..."); } } step 2: generate the header file, create the c source, then compile and create a shared library. I am running on redhat 9.0, so, javah -jni Native gcc -c Native.c ld -shared Native.o -o Native.so #include <jni.h> #include "Native.h" JNIEXPORT jint JNICALL Java_Native_calc (JNIEnv *env, jobject th, jint x, jint y) { jint z = x * y; return z; } int main() { printf("5 x 5 is %d", Java_Native_calc(NULL, NULL, 5, 5)); } step 3: at this point, Native.so exists in the current directory. so run the java program, including the current directory as the library path java -Djava.library.path=. Native which results in the UnsatisifiedLinkError what am i doing wrong? c [/QUOTE]

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