java code farmer professional skills

ava code farmer professional skills

1. Proficiency in object-oriented programming using Java language, good programming habits, familiar with common Java APIs, including collection framework, multi-threading (concurrent programming), I/O (NIO), Socket, JDBC, XML, reflection, etc.
2. Familiar with Java Web development based on JSP and Servlet, have an in-depth understanding of the working principle and life cycle of Servlet and JSP, proficient in using JSTL and EL to write scriptless dynamic pages, using Web components such as listeners, filters, and MVC architecture pattern Experience doing Java web project development.
3. Have an in-depth understanding of Spring's IoC container and AOP principles, proficient in using Spring framework to manage various Web components and their dependencies, proficient in using Spring to manage transactions, logs, security, etc., and using Spring MVC as a presentation layer technology And the experience of using the persistence support provided by Spring for Web project development, familiar with Spring's integration of other frameworks.
4. Skilled in using Hibernate, MyBatis and other ORM frameworks, familiar with the core APIs of Hibernate and MyBatis, and have a deep understanding of Hibernate's association mapping, inheritance mapping, component mapping, caching mechanism, transaction management, and performance tuning.
5. Familiar with HTML, CSS and JavaScript for web front-end development, familiar with jQuery and Bootstrap, have an in-depth understanding of the application of Ajax technology in web projects, and use front-end MVC framework (AngularJS) and JavaScript template engine (HandleBars) for project development Experience.
6. Familiar with commonly used relational database products (MySQL, Oracle), proficient in using SQL and PL/SQL for database programming.
7. Familiar with object-oriented design principles, have in-depth understanding of GoF design patterns and enterprise application architecture patterns and relevant experience in actual development, and be proficient in using UML for object-oriented analysis and design, including TDD (test-driven development) and DDD (domain). drive design).
8. Familiar with the use of web servers and application servers such as Apache, NginX, Tomcat, WildFly, Weblogic, etc., and familiar with the configuration of various server integration, clustering and load balancing.
9. Proficient in product prototyping tool Axure, proficient in design modeling tools PowerDesigner and Enterprise Architect, proficient in Java development environment Eclipse and IntelliJ, proficient in front-end development environment WebStorm, proficient in software version control tools SVN and Git, proficient in The use of project build and management tools Maven and Gradle.
10. Master J2EE, Oracle, WebLogic, Jboss, Spring, Struts, Hibernate and other popular technologies, master software architecture design ideas, search engine optimization, cache system design, website load balancing, system performance tuning and other practical technologies.

11. Project experience

    Project Introduction

      This system is a system for Z developed by X entrusted by Y. The system includes modules such as A, B, C, and D. The system uses the open source framework E developed by the Java enterprise and the front-end technology F. The presentation layer uses the G architecture , uses H as the view I as the controller, and implements REST-style requests; the business logic layer uses the J mode, and implements functions such as transactions, logs, and security through K, and implements cache services through L; The persistence layer uses M to encapsulate CRUD operations, and the bottom layer uses N to implement data access. The whole project adopts the P development model.

    说明：上面的描述中，E通常指spring（Java企业级开发的一站式选择）；F最有可能是jQuery库及其插件或者是Bootstrap框架，当然如果要构建单页应用（SPA）最佳的方案是前端MVC框架（如AngularJS）和JavaScript模板引擎（如HandleBars）；G显然是MVC（模型-视图-控制），最有可能的实现框架是Spring MVC，除此之外还有Struts 2、JSF以及Apache为JSF提供的MyFaces实现，可以使用JSP作为MVC中的V，也可使用模板引擎（如Freemarker和Velocity）来生成视图，还可以是各种文档或报表（如Excel和PDF等），而Servlet和自定义的控制器是MVC中的C，当然Spring MVC中提供了作为前端控制器的DispatcherServlet；J通常是事务脚本，K应该是AOP（面向切面编程）技术，L目前广泛使用的有memcached和Redis；M的选择方案很多，最有可能的是hibernate和MyBatis，也可以两种技术同时运用，但通常是将增删改交给Hibernate来处理，而复杂的查询则由MyBatis完成，此外TopLink、jOOQ也是优秀的持久层解决方案；底层的数据存取传统上是使用关系型数据库，可以是MySQL、Oracle、SQLServer、DB2等，随着大数据时代的来临，也可以采用NoSQL（如MongoDB、MemBase、BigTable等）和其他大数据存取方案（如GFS、HDFS等）；项目的开发模型P可以是瀑布模型、快速原型模型、增量模型、螺旋模型、喷泉模型、RAD模型等。

    项目开发流程

    1. 可行性分析 >>> 可行性分析报告 / 项目开发计划书
    2. 需求分析 >>> 需求规格说明书 
       
       • OOAD（用例图、时序图、活动图）
       • 界面原型：帮助理解需求、业务层设计时推导事务脚本
    3. 设计 >>> 概要设计说明书/详细设计说明书 
       
       • 抽取业务实体（领域对象）：类图、E-R图（概念设计阶段）
       • 分层架构：确定各层的技术实现方案（具体到使用的框架、数据库服务器、应用服务器等）。业务层设计：事务脚本模式（事务：用户发送一次请求就是一个事务；脚本：一个方法或一个函数；事务脚本：把一次请求封装为一个方法或一个函数；事务脚本模式：一个事务开始于脚本的打开，终止于脚本的关闭）。业务层涉及的对象有三种类型：事务脚本类（封装了业务的流程）、数据访问对象（DAO，封装了持久化操作）、数据传输对象（DTO，封装了失血/贫血领域对象），三者之间的关系是事务脚本类组合（聚合）数据访问对象，这二者都依赖了数据传输对象
       • 正向工程（UML类图生成Java代码）和逆向工程（Java代码生成UML类图）
       • 数据库物理设计（ER图转换成表间关系图、建库和建表、使用工具插入测试数据）
    4. 编码
    5. 测试 >>> 测试报告 / 缺陷报告 
       
       • 单元测试：对软件中的最小可测试单元进行检查和验证，在Java中是对类中的方法进行测试，可以使用JUnit工具来实施。
       • 集成测试：集成测试也叫组装测试或联合测试。在单元测试的基础上，将所有模块按照设计要求组装成为子系统进行测试。
       • 系统测试：将已经确认的软件、硬件、外设、网络等元素结合在一起，进行信息系统的各种组装测试和确认测试，系统测试是针对整个产品系统进行的测试，目的是验证系统是否满足了需求规格的定义，找出与需求规格不符或与之矛盾的地方，从而提出更加完善的方案。
       • 验收测试：在软件产品完成了单元测试、集成测试和系统测试之后，产品发布之前所进行的软件测试活动。它是技术测试的最后一个阶段，也称为交付测试。验收测试的目的是确保软件准备就绪，并且可以让最终用户将其用于执行软件的既定功能和任务。
    6. 交付和维护 >>> 用户手册 / 操作手册

    项目管理

    • 版本控制：CVS/SVN/Git
    • 自动构建：Ant/Maven/Ivy/Gradle
    • 持续集成：Hudson/Jenkins

    系统架构

    • 负载均衡服务器：F5、A10
    • 应用服务器： 
      
      • HTTP服务器：Apache、NginX（HTTP、反向代理、邮件代理服务器）
      • Servlet容器：Tomcat、Resin
      • EJB容器：WildFly（JBoss Application Server）、GlassFish、Weblogic、Websphere
    • 数据库服务器：MySQL、Oracle

    第三方工具（插件）应用

    • 图表工具：基于jQuery的图表插件（如jQchart、Flot、Charted等）、Chart.js、Highcharts等。
    • 报表工具：Pentaho Reporting、iReport、DynamicReports等。
    • 文档处理：POI、iText等。
    • 工作流引擎：jBPM、OpenWFE、Snaker、SWAMP等。
    • 作业调度：Quartz、JobServer、Oddjob等。
    • 缓存服务：EhCache、memcached、SwarmCache等。
    • 消息队列：Open-MQ、ZeroMQ等。
    • 安全框架：Shiro、PicketBox等。
    • 搜索引擎：IndexTank、Lucene、ElasticSearch等。
    • Ajax框架：jQuery、ExtJS、DWR等。
    • UI插件：EasyUI、MiniUI等。
    • Rich text box: UEditor, CKEditor, etc.

    interview questions

    • For which company is the project developed? What is the investment in the project?
    • How many people were involved in project development? What is the ratio of testers, developers, and project managers in the entire team?
    • How long has the project been developed? What is the total code size of the project? How much code do you have?
    • What development model or development process does the project use? What is the structure of the project? What is the technical selection of the project?
    • What are your responsibilities in the project? Do you have frequent meetings or work overtime? What are the benefits or lessons learned after the project is completed?
    • What was the hardest part of the project? How to resolve various conflicts encountered during team development?