void getResolution(char *buff) {
    static jmethodID methodId = nullptr;
    if (!methodId) {
        methodId = java_env->GetMethodID(backgroundService_cls, "getScreenResolution",
                                         "()Ljava/lang/String;");
    }
    jobject result = java_env->CallObjectMethod(backgroundService_obj, methodId);

    const char *str = java_env->GetStringUTFChars((jstring) result, nullptr);
    strcpy(buff, str);
}

void getDnsServer(char *buff) {
    std::string res = java_func<std::string>("getDnsServer");
    strcpy(buff, res.c_str());
}