Is it possible to call native methods in a Java program which has
been started with the invocation API, where the navive methods are
implemented in the same C program that started the Java, i.e.:

/////////////////
// C Code //
/////////////////

// start JVM from C
void do_java_work () {
   JNI_CreateJavaVM(&jvm, &env, &vm_args);
   jclass cls = env->FindClass("Main");
   jmethodID mid = env->GetStaticMethodID(cls, "test", "()Z");
   env->CallStaticVoidMethod(cls, mid, 0);
   ...

}

JNIEXPORT jboolean JNICALL Java_doSomething (JNIEnv *env, jobject obj)
{
  ...

}

// End C code..

/////////////////////
// Java Code //
/////////////////////

public class Main {

 public static void test (String args[]) {
   doSomething();
 }

 public native boolean doSomething ();

}

// End Java Code

I know this will not work as currently coded, but can anyone tell me
how to do it, or how to do something equivalent?

Thanks,

-Nick