void greeting()
    {
        printf("Hello Native World!\n");
    }

    class HelloNative{
        public static native void greeting();

        static{
            System.loadLibrary("HelloNative");
        }
    }

    javac HelloNative.java

    javah HelloNative

    #include "HelloNative.h"
    #include 

    JNIEXPORT void JNICALL Java_HelloNative_greeting (JNIEnv *env, jclass cl)
    {
        printf("Hello Native World!\n");
    }

    //on Cygwin programming environment in windows
    gcc -mno-cygwin -D __int64="long long" -I JAVA_HOME/include/ -I JAVA_HOME/include/win32 -shared -Wl,--add-stdcall-alias -o HelloNative.dll HelloNative.c

    // Gnu C compiler on Linux
    gcc -fPIC -I JAVA_HOME/include -I JAVA_HOME/include/linux -shared -o libHelloNative.so HelloNative.c


    //With tSun compiler under the Solaris Operating System
    cc -G -I JAVA_HOME/include -I JAVA_HOME/include/solaris -o libHelloNative.so HelloNative.c

    //in Microsoft C++ compiler on Windows
    cl -I JAVA_HOME\include -I JAVA_HOME\include\win32 -LD HelloNative.c -FeHelloNative.dll

    class HelloNativeTest{
        public static void main(String[] args){
            HelloNative.greeting();
        }
    }
    

    javac HelloNativeTest.java
    java HelloNativeTest