Java HotSpot Virtual Machine

I'm accessing jbytearray from Java to C++ program and want to copy the jbyteArray in C++ into array of type 'unsigned char' and of same length .
Following code I wrote:

JNIEXPORT void JNICALL Java_UserFrontEnd_ImageSensor_FPMMatch
(JNIEnv *env, jobject, jbyteArray minut){

unsigned char minut1[400]; //array in cpp

jsize len = env->GetArrayLength(minut); //this gives len = 400

jbyte *minbyteA = env->GetByteArrayElements(minut, 0);

//Now how do I copy minut into minut1 ?

env->ReleaseByteArrayElements(minut, minbyteA, 0);

}