What is the encoding in the file?

Question

Java

After reverse engineering apk, there are quite readable java files, but the Cyrillic alphabet looks unreadable in them.

private void checkVersion() {
        if (newVersion().booleanValue()) {
            NotificationUtil.showUpdService(this.mContext, R.id.updService, 17301561, R.string.app_name, "\u041e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f", this.ilink, 16, 5);
        }
    }

How can I make the app_name value readable?