#include #include #include "Callbacks.h" JNIEXPORT void JNICALL Java_Callbacks_nativeMethod(JNIEnv *env, jobject obj, jint depth) { jclass cls = (*env)->GetObjectClass(env, obj); jmethodID mid = (*env)->GetMethodID(env, cls, "callback", "(I)V"); if (mid == 0) { return; } printf("In C, depth = %d, about to enter Java\n", depth); (*env)->CallVoidMethod(env, obj, mid, depth); printf("In C, depth = %d, back from Java\n", depth); }