在Wordpress中开发一个主题，包含网站和小程序（请使用中文沟通） 完全和以下这个网站一样 技术栈介绍： 1、前端：小程序使用微信uniapp开发框架，web管理端使用基于Vue.js 2.x系列 + Element UI 的后台管理系统解决方案。 2、后端：使用java语言基于框架springcloud+springboot+netty开发，数据库redis+mysql。 3、网站基于Wordpress开发成主题 付款进度： 1:网站主题，开发完成支付20% 2:名片小程序，开发完成支付30% 3:全部开发完成并自动化单元测试、静态代码分析、持续集成/持续部署（CI/CD）、错误监控和日志分析，全部修复完成后支付尾款50% 开发进度：自接单日起，共30天
日本語コミュニケーションができる人 英語も大丈夫 損害保険 Java開発 711アプリ アンドロイド開発 いろんな開発経験があります
【 Androidアプリ開発者募集 】 Android向けに開発したいと考えており、 エンジニア・プログラマの方を募集します。 お仕事の詳細： ▽使用するプログラミング言語 ・Javaのスキル ・MySQL / PostgreSQLなどのデータベース技術 ・サーバサイドの技術があれば尚可（vps、クラウドサーバーなど） ▽重要視する点・開発経験 ・Android SDK、Javaでのスマートフォンアプリ開発経験 ・Android端末に対する深い理解（特にGalasySシリーズなどのメジャーなスマートフォン） ・AndroidOSに関する理解 ・クライアント企業とのコミュニケーションに慣れている方 ▽注意点・禁止事項 ※他で登録されているデザインや商標の転用など、他社の知的財産権を侵すこと ※他のクライアントへ既に提案した内容の転用など ▽その他コメント ※実際のAndroidアプリ開発の進め方・別途詳細は、クラウドワークスのメッセージでやりとりして決められればと思います。 ※ご希望があれば、このお仕事以降も、Android版の開発など継続的に追加で依頼をさせていただく可能性もあります。 たくさんのエンジニア・プログラマの方からのご連絡・ご応募お待ちしております。
新しいウェブサイトが必要です 作成のみ その他 / 不明 小中学生が英語を学ぶための学習サイトを作りたいです。サイトにはJavaスクリプトで動くようなゲーム感覚の問題を組み込み、生徒が個別に会員登録してログインできるシステムも欲しいです。 また、設問を選択し、自分にあった学習方法を表示させるようなphpのシステムもくみこみたいです。
Please to recover the 500 Internal Server Error that occurred in the construction sites in Magento. 500 Internal Server Error is now displayed in normal operation to have a site that has been built with magento. I do not remember such as changes to the file. Only the 500 Internal Server Error front end of the site is displayed. Back office is normal operation and normally displayed. Also with reference to the existing DB by installing a new magento files become 500 Internal Server Error. I will be get 500 Internal Server Error in DB creation time when I try to fresh installation with the new DB and file. I tried it. Change permissions using the magento-cleanup.php. Installation condition confirmation using the magento-check.php. Delete of .h...
「請求書作成システム（java）」の開発を募集させて頂きます。 今回はテスト開発となります。 添付ファイルのイメージ開発とデータ読み込み表示 となります。 主な応募条件 ・毎日の進行状況をメールしてください。（レスポンス重視） ・ベトナム・ミャンマー在住の方（企業・個人 不問） ・その他業務開発がありますので長くお取引できる方を希望。 ・日本語の読み書きがスムーズな方。※会話力は不問。 （英語は対象外です）
... We are continue to develop CS system, MS SQL +SSIS ,SSRS of server side and PHP front with IIS. All MS solution based. We have Server side engineer in house. we have test server with dummy data, you can try from remote. development can do english based with skype, github,mail and so on. We hope to good offshore appications. Thanks now we are searching below project enginner. 1 upgrade SQL server SSIS import program2005 to 2012 SSIS side is improt form CSV to DB, job lancher is C# based. Req Skill C# 2000, SSIS, SQL 2 upgarde SSRS program 2005 to 2012 small customizing upgarde checking. over 100 report should upgarde 3 php with sql add new searching view etc stored exec, view,dbo, will be made by server side so you only made ...
...?????????????? ? ??????????APK/???????????? ? ????????????????????????? ? ??????????????????????????? (2) ?????????????? ???????A/B/C???????????????????????????????????????????????????????????? ????????????(1)????????????????????? ? ??????????????? ? ????????????????????????????????????????????????????????????????????! ????????????????????????????????????????????????????????? PHP, jQuery, java ??????????????????? =========================================== A??? 1. APK???????/?????(??????????????)???/?????????? ? ?? ??????????? jQuery Windows??????chrome??????? ? ?? ?????????????????json??????????json??????? ?????????????????????????????? ???????????json?????????????(?????????????)?? ???????????????????????????????? ??APK?????????????????????? ...
...?????????????? ? ??????????APK/???????????? ? ????????????????????????? ? ??????????????????????????? (2) ?????????????? ???????A/B/C???????????????????????????????????????????????????????????? ????????????(1)????????????????????? ? ??????????????? ? ????????????????????????????????????????????????????????????????????! ????????????????????????????????????????????????????????? PHP, jQuery, java ??????????????????? =========================================== A??? 1. APK???????/?????(??????????????)???/?????????? ? ?? ??????????? jQuery Windows??????chrome??????? ? ?? ?????????????????json??????????json??????? ?????????????????????????????? ???????????json?????????????(?????????????)?? ???????????????????????????????? ??APK?????????????????????? ...
Amazonの在庫、価格更新システムのインストールを2カ国分、注文管理システムの機能追加を希望します。
現在、弊社ではユーザー直、代理店案件含めまして、受託、常駐案件ともに多数ございます。 PHP、Java、Oracle、C#、Ruby、SAPが中心ですが、事業拡大に伴い現在、パートナーを探しております。 SAP案件、Java、PHP案件、LAMP(Linux、Apache、MySQL、PostgreSQL)案件、VC++、C言語案件、VB、C#.NET、COBOL、Ruby案件、PM(プロジェクトマネージャー)、PL(プロジェクトリーダー)など受託、常駐で開発案件のご協力をして頂ける方の募集で御座います。 制御系・組み込み系から企業の情報システム、基幹システム、業務システム開発、ウェブシステム、サイト構築まで。 現在、ユーザー直の受注案件で具体的な案件内容も提示できますので、宜しければ、一度お会いしてご相談させて頂ければと思っております。
I need a proficient Java developer who can work effectively using Agile software development methodologies. You will primarily focus on the backend part of a software development project. Familiarity and experience with Spring Boot and Java EE are crucial. • Main task: Backend software development • Methodology: Agile • Key technologies: Spring Boot, Java EE Previous experience in similar software development projects and a strong comprehension of Agile methodologies will be the key to success. You are expected to hit the ground running, so prior hands-on experience with Spring Boot and Java EE is essential. Your strong knowledge in these technologies will guarantee the swift and efficient progression of this project.
I'm in need of a Machine Learning Engineer who can help fine-tune Llama3 with a custom dataset. Key Requirements: - Experience with Machine Learning - Proficiency in Llama3 - Ability to work with custom datasets - Strong understanding of model fine-tuning - Familiarity with Python, R, or Java The project involves adapting Llama3 to our specific application, which requires significant customization. The ideal candidate should be able to work with custom datasets, and optimize this model to ensure accuracy.
I'm in need of a seasoned IT professional who can set up a Windows-based VPN server for my company. The primary purpose of this server is to allow our employees to access the company's resources securely from remote locations, which is currently a pressing need for us. Key Requirements: - Configuration of a VPN server on Windows OS - Setting up a secure connection for remote employees - Allowing simultaneous connection for a small user base (1-10 users) Ideal Skills and Experience: - Proficiency in Windows OS - Hands-on experience with VPN server configuration - Knowledge of network security best practices - Prior experience with remote access solutions Your expertise will play a crucial role in enhancing the security and efficiency of our remote w...
Tengo el código empezado pero no logro subir el archivo al bucket, lo que necesito es un método que reciba como parámetro un arreglo de byte que contendrá el archivo y lo guarde en un bucket.
Tutti i siti web che puntano al server in questione ritornano un errore 503 Service Unavailable. intervento da effettuare al più presto tramite connessione TeamViewer (dal mio pc ci sono tutti gli accessi SSH admin ecc...). per visualizzare l'errore, di seguito un sito web impattato dal problema : grazie
I'm in need of a customized Java program. I haven't decided on a specific purpose, but I'm looking for a skilled developer who can deliver a robust, well-structured program. The ideal candidate for this project should have a strong command of Java programming, as well as experience with program development for various purposes. The program may involve extensive data manipulation, network interactions, or other functionalities. Your ability to create clean, efficient code will be a big advantage. Please note that, as I haven't pinned down the exact requirements, being able to adapt and respond to shifting project needs will be crucial. Looking forward to hearing from you.
I've encountered an internal server error on my website when accessing a specific page. This issue is particularly critical as some of my visitors are unable to access my site due to this error. While some visitors can browse the website, others are completely blocked. Key Project Details: - The error is triggered when accessing a specific page. The rest of the website is accessible. - The issue is causing a split in visitor access, with some able to view the site consistently and others unable to access at all. - The problem is particularly urgent as it is directly impacting my site's usability. Skills and Experience Needed: - Proficient in troubleshooting common internal server error causes. - Experience in addressing website access discrepancies for users based...
I encountered an internal server error while trying to access a specific webpage on my website. The error is isolated as it only occurs on certain pages. Some visitors can access the site and some cannot. For example: I can access with WiFi but not with my mobile connecction. The ideal freelancer for this project should have: - Proficient understanding of server-side technologies and the workings of web servers. - Strong problem-solving skills and the ability to troubleshoot technical issues effectively. (Wordpress) and (godaddy) - Experience in handling internal server errors, ideally on specific pages. - Good communication skills to effectively inform me of the error's cause and resolution. Please contact me if you have experience with this issue and think you...
My project involves packaging a Java application into a Docker image compatible with CentOS. This will extend the application's portability and scalability. Ideal Candidate: - Familiarity with Docker and Docker container management - Proficiency in CentOS Linux distribution - Experience packaging Java-based applications into Docker Images Requirements: - Transform the provided Java (or others compiled) program into a Docker image - Ensure the Docker image is fully compatible with CentOS - Verify the Dockerized Java program runs without hiccups on CentOS systems.
I'm in need of an experienced Android developer to update our Java-based app, originally designed for Android 5 KitKat, to work seamlessly on modern tablets. Key Requirements: - Improve User Interface: The project involves enhancing the app's existing UI. - Compatibility Upgrade: The current app is only compatible with Android 5 KitKat; the developer must ensure it functions smoothly on contemporary tablets. Additional Information: - The app currently consists of 6-10 screens or activities. - A new feature will be the integration of Bluetooth connectivity. -The app controls hardware via bluetooth, sends PWMs and reads ADC values and reads/writes to an rs232 info stream
I'm in need of an experienced web developer with strong shell scripting skills. While the main purpose of the website application is not specified, it's targeted at the general public. Ideal Skills and Experience: - Proven expertise in web application development - Experience in creating websites geared towards the general public - Robust skills in shell scripting - Ability to independently make decisions to enhance website functionalities Note: As the tasks for shell scripting are undefined, a flexible way of working is preferred for meeting emergent needs in the project.
I'm in need of an IT professional to set up an SMTP server on my Debian server. The primary purpose of this setup is to allow the server to send out automated email notifications for a custom-built application. Key requirements and expectations for this project include: - Setting up an SMTP server specifically utilizing Sendmail software on a Debian server - Ensuring that the configuration is optimized for automated email notifications - Providing guidance or documentation on how to integrate the SMTP server with my custom-built application Ideal candidates for this project should possess the following skills and experience: - Proficiency in working with Debian servers and setting up SMTP servers - Prior experience with Sendmail configurat...
I'm looking for a skilled software developer who is proficient in Java and familiar with the DJI drone SDK. Seeking individual with HTTP and DJI SDK experience to add features to DJI Ground Control Software. The application must transmit and handle HTTP REQUEST to server, display popup messages, play notification audio, and auto-upload waypoint to a selected drone. Key requirements: - You must have experience in software development on Windows OS. - Proficiency in Java is a must. Experience with DJI drone SDK is highly preferred. - The main feature to be added to the software is automatic drone flight path planning. Key responsibilities: - Integrate the DJI drone SDK into my existing software. - Implement automatic drone flight path planning feature. This pro...
I'm in need of a skilled and experienced games programmer to help me create a mobile game with a strategy genre. The ideal candidate for this project should have the following qualifications: - Proficiency in C++, Java, and Python, as these are the languages I'm familiar with and would like to use for this project - A proven track record in developing mobile games, with a preference for strategy games - Strong understanding of game design principles and mechanics - Ability to work collaboratively, take direction, and provide valuable insight and feedback - Excellent problem-solving skills and a keen eye for detail If you have the necessary skills and are passionate about creating engaging, high-quality mobile games, I'd love to hear from you. Please provide examples...
I have a PostgreSQL database hosted on AWS. When trying to connect to my database server from my web application, I'm consistently receiving a TCP/IP error. Key Project Points: - The issue is specifically related to the TCP/IP connection between the web application and the AWS PostgreSQL database server. - The PostgreSQL database is hosted on AWS; it's not a local instance. - The web application is the only service experiencing this issue with the server. Ideal Freelancer: - Proficient in AWS services, particularly Amazon RDS for PostgreSQL. - Strong background in dealing with network errors, particularly TCP/IP. - Experience in troubleshooting web application and database connectivity issues.
...provide a sound alert to notify me. Key Details: - The program needs to be fast to cater for frequent changes in millisecond time-frames. - I don't have a preference for a programming language. Python, Java, and C++ are all acceptable. - At this stage, I'm unsure which order flow software I'll be using. Therefore, the program needs to be built with adaptability in mind to synchronize smoothly with any potential order flow software. - A sound alert should be triggered whenever a three-digit number pops up. Ideal Skills and Experience: - Proficient in programming languages (especially Python, Java, C++) - Experience in developing real-time monitoring software - Understanding of trading platforms and order flow software - Excellent problem-solving abilities...
I'm in need of an experienced Java Script developer that can resolve a peculiar issue with my implementation. Here are the specifics: - All of the data I'm showcasing are ALL DAY events. - The events are not appearing in the Week and Day views, however, they do display as expected in the Month and List views. - I am using a version of that's not the latest. I'm looking for a professional who can: - Investigate the issue and implement a fix to ensure the ALL DAY events are correctly displayed across all views. - Offer advice on whether updating to the latest version of would help address the problem. The ideal candidate should have: - Profound experience in Java Script development. - A deep understanding of functionalities and
Looking for a Senior BDA with experience in. AZURE SQL SERVER. English mandatory. 1d per week helping to improve and maintain our main DBs.
Hello After a reboot of a server our cpanel not working anymore, need urgent helpwith IMMEDIATE availability
Looking for an android developer Java,Kotlin,JSP, Servlets, MQ series, Hibernate, Python, Microservices, Swings, WebSphere-Portals, HTML5, Bootstrap, JavaScript, Bigdata, Linux Frameworks Android Mobile App Development, Spring boot, Struts, Hadoop This will be ongoing
I'm in need of an experienced Android developer to create a productivity app that primarily focuses on calculations. Key Features: - The app will be centered around calculation functions - Users should be able to make basic arithmetic ca...of an experienced Android developer to create a productivity app that primarily focuses on calculations. Key Features: - The app will be centered around calculation functions - Users should be able to make basic arithmetic calculations - The app needs to be user-friendly and intuitive for quick calculations Ideal Skills and Experience: - Strong background in Android development, proficient in Java or Kotlin - Previous experience building productivity apps - Prior experience working with calculation functions - A good understanding of UX/UI...
I'm in need of a skilled programmer to develop a script that can serve as both a Man-in-the-Middle (MITM) and a Reverse Proxy tool. The primary goal of this script is to assis...restrictions. Key Project Requirements: - The script should be compatible with Windows, MacOS, and Linux. - It should effectively intercept network traffic and support the following network protocols: HTTP, HTTPS, and TCP. - The script should also have the capability to act as a Reverse Proxy tool when needed. Ideal Skills and Experience: - Proficiency in programming languages like Python, C++, or Java. - Experience in developing network security tools or reverse proxy systems. - Knowledge of network protocols and their interactions. Please, only bid on this project if you have the necessary skills ...
I'm looking for a server administrator with intermediate Drupal experience to handle ongoing maintenance. Key responsibilities include: - Monitoring the server's performance and troubleshooting any issues that arise. - Ensuring the server remains secure and up-to-date with the latest patches. - Regularly backing up the server's data to prevent loss in case of failure. - Updating and maintaining the Drupal installation, ensuring compatibility with the server setup. Ideal skills and experience: - Proficiency in Linux server administration and management. - Intermediate level of experience with Drupal, including installation and configuration. - Strong troubleshooting and problem-solving skills. - Understanding of best security practices for server...
The developer should have the following skills and experience: 1. Proficient in Java, Kotlin and other programming languages; 2. Have a deep understanding of Android platform, familiar with Android SDK and related tools; 3. -- If you have an already published app you can! Out -- for s-a-l-e! . If you are interested, please feel free to contact us and look forward to further communication with you.
Bought a react eCommerce template (front-end & back-end) from theme-forest. Provided documentation is not enough for server side installation. I need professional assist to install the project on server side and install the theme on server side.
I'm searching for an experienced Android developer to work on a self-help app that...app is to track the user's progress. Key Features: - User Registration and Login: The app should incorporate a straightforward registration and login system to ensure user engagement. - In-App Purchases: It's essential that the app supports in-app purchases to enable users to access premium content or features. The developer should have the following skills and experience: 1. Proficient in Java, Kotlin and other programming languages; 2. Have a deep understanding of Android platform, familiar with Android SDK and related tools; 3. -- If you have an already published app you can! Out -- for s-a-l-e! . If you are interested, please feel free to contact us and look forward to furthe...
I'm seeking an Android developer with a strong grasp of Java programming, Android SDK, and UI/UX design for a straightforward project. Key Features: - The app should be capable of user authentication. Primary Goal: - The main objective is to create a basic calculative with admin approval of features and scrollong images which can be changed application. App is similar to video attached The ideal candidate will have experience in developing clean, user-friendly Android applications with a focus on accurate calculations. Experience in UI/UX design is a plus, as we aim to provide a sleek and intuitive user interface.
We are seeking a skilled developer to create a self-service car wash system that can be used on both Andr...system should allow users to easily locate nearby car wash stations, select their preferred service package, make payments, and receive notifications. The ideal candidate should have expertise in Android and iOS app development, as well as experience with GPS integration, payment gateways, and push notifications. 1. At least 2 years of experience in Android application development 2. Proficient in Java or Kotlin programming languages and Android development tools and frameworks 3. Have a certain understanding of mobile application design and user experience 4. If you have published applications for s-/--a--/--l---/-e, I am interested and look forward to further communicatio...
I desperately need to get apps, especially those available on the Google Play Store. My interests lie in a broad range of application types, including gaming, tools, lifestyle, entertainment, and news applications. All applications except finance, wallpapers. And requires a certain amount of downloads. key point: Have a certain number of downloads - The apps should be available on the Google Play Store. Make sure the source file signature file is complete. - I am particularly interested in games, tools, lifestyle, entertainment and news apps. Your role is to sell me the rights to your application. Experience using applications in these specific categories (games, tools, lifestyle, entertainment, news) will be a major advantage.
...Rest Assured to implement it in an API testing project at work. Key Requirements: - Experience in Java, BDD, Serenity framework, and Rest Assured - Able to guide and teach on: - Understanding an automation project - Creating and executing tests - Reporting - GIT Integration The project is centered around API testing, so any specific experience here is a plus. I'm looking for a patient, experienced professional who can help me grasp the fundamentals and guide me through the intricacies of implementing automation with the mentioned frameworks. There are existing scripts in place which I need to understand and also create new scripts and execute on my own. Ideal Skills: - Strong Java background - Experience in BDD - Expertise in Serenity framework and Rest As...
I'm looking for a skilled professional who can solve advanced level CTF challenges, in various categories. I need someone who can tackle challenges in Web Exploitation, Binary Exploitation, Cryptography, as well as other categories like web, forensics, osint, and more. Key Responsibilities: - Solve advanced level CTF challenges ...experience with CTF challenges - Proficiency in solving challenges in Web Exploitation, Binary Exploitation, Cryptography, web, forensics, osint, etc. - Proven track record of solving advanced level CTF challenges - An understanding of security concepts Please note that the specific programming languages or platforms to be used in solving the challenges are not specified, but your background in Python, Java, C++, Ruby, or other relevant languages ...
I'm seeking the expertise of a seasoned developer to create a customized chat f...in building similar platforms will be a significant advantage. - Media Sharing: The chat interface should be modern and dynamic, capable of handling in-message media sharing. This means users should be able to share images, videos, and other rich media content within the chat conversation seamlessly. If you've designed such interfaces before, you're the person I'm looking for! Skills such as Java, Python, or PHP are desirable. Exceptional knowledge of web sockets is a must for real-time chat functionalities. An understanding of user experience is also essential, as the platform must be user-friendly. I'm open to suggestions on how to make this project a success, experience i...
I'm seeking assistance with an urgent issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programmin...issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programming Language**: Unfortunately, the programming language of my softphone engine has been omitted. I believe it may be C#, Java, or C++. It's imperative that the freelancer is comfortable with these languages to handle the issue. - **Timeline**: I'm in need of immediate assistance to solve this problem. Ideal candidates should be able to troubleshoot softphone issues and have experience with Windows software development. Experience with C#, Java, and C++ is a plus. The ability to...
...including ID cards, receipts, invoices, paper, and passport photos, and saving them in JPEG format. As such, the app should be able to: - Recognize and accurately scan ID cards, receipts, invoices, paper, and passport photos - Provide a seamless and user-friendly experience for scanning documents - Showing Auto or Manual Edge Cropping, Image Rotation - Using OpenCV - Native Android (Android Studio), Java I would like the app to be specifically tailored for Android, ensuring a smooth user experience and a clean, intuitive interface. Ideal Skills and Experience: - Proficiency in Android development - Experience in developing document scanning apps - Familiarity with image recognition and processing - Ability to create a simple and user-friendly interface - Knowledge of saving...
I'm seeking a skilled REDM game developer, who takes a particular interest in creating a Roleplay server on the REDM network. Expertise in developing game mechanics are key for this project. The primary task involves: - Developing a Roleplay server game. - Incorporating customizable characters, multiplayer functionality, and an in-game economy system. A successful freelancer will have a good understanding of how to create immersive and engaging Roleplay environments, and experience in implementing character customization options, multiplayer functions and economy system into such a game. Candidate should possess expertise in REDM server game development and game design principles. A proven track record in similar projects will be advantageous.
I'm looking for a skilled AWS expert to help me set up a highly performant proxy server that can support multiple protocols. Key requirements include: - Setting up the proxy server in AWS - Configuring elastic IPs for the proxy server - Ensuring it runs at an optimal performance level - Supporting multiple protocols The proxy server should be designed to accommodate a high volume of traffic and provide a seamless, fast browsing experience. Ideal candidates should have: - Extensive experience with AWS services - Proficiency in configuring and managing proxy servers - A strong understanding of networking and server optimization Please bid with a clear outline of how you plan to approach this project, including any relevant experience you have that...
I require a skilled Linux administrator to assist setting up a server on my local machine. I currently have a domain, cloudflare, WSL, ubuntu, ollama and ollama webui. I'm getting stuck on connecting my domain through cloudflare tunnel to my linux server so that I can access ollama's webui remotely. Key Responsibilities: - Install and configure Linux server for accessing the Cloudflare tunnel website - Ensure the server is optimally configured for devices outside the network Ideal Skills: - Proficient in Linux server setup and administration - Experience with Cloudflare tunnel configurations - Knowledgeable about server configuration for network accessibility - Background in IT security to ensure secure network access. -Experience with...
I have a source code for android video streaming app in java, xml, and i need to change the design of the app frontend I am looking for someone who can make changes to android app code design and recreate the frontend. below i have attached the design of my app, and want to reformat it according to zee5 app design. If you feel its a good fit for you, i welcome your bid. thanks.
Overview: We are looking for an experienced Java developer to refactor an existing code base to incorporate several design patterns and improve overall code quality. This project involves enhancing the structure and maintainability of the code by integrating various design patterns, such as Dependency Injection (DI) using Google Guice, Listener, Builder, Singleton, and, optionally, Factory design patterns. The ideal candidate should understand these patterns strongly and have experience refactoring legacy code. Key Responsibilities: 1. Refactor Service Classes with DI Pattern: - Utilize Google Guice API to implement Dependency Injection across all service classes. - Ensure that all dependencies are injected and managed by the Guice framework. 2. Apply Listener Design Pattern...
