[Android] [JNI] Method to get class name as std::string

ClassName

static std::string getClassName(JNIEnv *env, jobject entity, jclass clazz)
{
    jmethodID mid = env->GetMethodID(clazz, "getClass", "()Ljava/lang/Class;");
    jobject clsObj = env->CallObjectMethod(entity, mid);
    jclass clazzz = env->GetObjectClass(clsObj);
    mid = env->GetMethodID(clazzz, "getName", "()Ljava/lang/String;");
    jstring strObj = (jstring)env->CallObjectMethod(clsObj, mid);

    const char* str = env->GetStringUTFChars(strObj, NULL);
    std::string res(str);

    env->ReleaseStringUTFChars(strObj, str);

    return res;
}