jobject class_name = (*env)->NewStringUTF(env, name);
jclass java_class = (*env)->CallObjectMethod(env, instance_class_loader, class_loader_findClass, class_name);
if (java_class == NULL) {
jobject class_name = (*env)->NewStringUTF(env, name);
jclass java_class = (*env)->CallObjectMethod(env, instance_class_loader, class_loader_findClass, class_name);
if (java_class == NULL) {