jsp中使用javabean的好处
目前，Java已成全球编程语言的领头羊，它应用领域广泛、前景可观，升职加薪也是指日可待的事。
虽说它的前景可观，但回想下自己走过的路，那真是困难重重啊，接下来就给大家分享几点学习心得，希望能帮助到初学者。
一、学习要脚踏实地，不可超值过急对于初学者来说一定要奠定好基础，要脚踏实地的学习，为日后学习高深知识奠定好基础，要给自己定个学习计划，按照流程去学习，不要学了一半JVM后觉得没啥意思，又去学SWT，结果发现对这个程序也没多大兴趣，有转去学别的，这样浮躁的性格导致你什么也学不会，建议大家一定要将入门教程吃透，平时多看视频讲解，把“基础知识”打牢固是很重要的。
二、看书不是重点，重点是多实践有了良好的开端还要养成良好的学习习惯，平时不单单是多看书本知识，自己在看书的时候还要把书上的例子亲手敲到电脑上去实践，千万不要图省事，就照抄、复制，只有实践才知道自己是否真的会写代码。
虽然说理解编程语言是首要，但也要勤动手、多思考，多编一些例子，做到将理论和实践相结合，这样才能真正的掌握这门技能。
三、由浅入深，不断赶紧程序编写难度每个人都懂得学习是件漫长又枯燥的事情，所以每个想学Java的学者都要做好心理准备，在有准备后要给自己养成个好习惯，先从简单的程序入手，可以通过命令行的方式实现，功能可以有不足，但是随着学习的深入，你可以不断的完善这个程序，直到你把它做成一个完美、性能全的程序后，你才真的学透、学扎实了。
四、遇到难题要学会思考和总结每一个阶段都要对上一阶段做个反思和总结，不要丢了西瓜捡了芝麻，最后学一个丢一个，要经常把自己在学习过程遇到的难题和困惑记录下来，定时的去温习和反思，还要记下自己解决问题的经验和技巧，不断的浏览这些东西，将这些东西吃透，过一段时间，你会发现自己成长了不少。
五、定期研究一个技术，并将其学懂、学精根据市场出现的新奇玩应，不断的去学习和探索，所研究的技术一定要比目前技术水平高，只有不断的探索和专研才能提升个人能力，我相信这一点一般的程序员都没能做到，如果你是抢先做到这一点，你的能力肯定比他人都要强很多。
总而言之，要不断的从实践中学习，要脚踏实地的学好技术，勤奋联系，也要善于利用网上的资源，譬如蓝鸥Java视频教程，从他人身上吸取经验和教训，让提升个人能力不在成为纸上谈兵的事。
JAVA猜数字
首先你打算用什么技术来实现这个系统，先想好用哪些东西，是纯粹的jsp,servlet+javabean还是用到struts,spring等框架，将用到的技术想到后，再进行下一步. 其次你要搭建基于你使用的开发技术的环境，如果用jsp,servlet,javabean的话只需要个tomcat类似的容器就行了，如果要用到struts或者spring等相关的框架的话，就去下载相关的文件，如果用EJB的话，去装个jboss或者weblogic等EJB容器. 再次，环境搭建好之后就进入真正的开发了，进行需求分析，uml建模，设计好层次结构，然后进行编码，编码好后进行测试，不断改进，最后交付使用了. 呵呵，如果你不懂的话现看看相关的资料再进行开发，不要茫无目的的动手编码。
在Java中抽象类和抽象方法的特点是什么
抽象类不能直接new一个对象，必须写一个继承类来重写其抽象方法
同样抽象方法也不能直接调用，调用的都是具体的方法
请各位英语达人帮我翻译一下软件工程师简历中的 项目经验 不胜感激
我还是把三条一起发给你吧。
项目经验： Project Experience1. XX服装企业分销网络系统1. Distribution Network System for ××Clothing Enterprise 项目介绍：该系统实现了服装企业对服装分销流程的信息化支持，系统的主要功能模块有：分销商库存管理、流向单管理、统计报表管理、分销费管理、付款结帐管理、基础数据管理等。
本系统主要对企业的物流和资金流进行全面的管理和控制。
Project Introduction: This system realizes the information support to the distribution flow of clothing enterprises. The main function modules include: distributor stocking management, flow direction form management, statistics form management, distribution fees management, payment and check-out management, basic data management, etc. This system is mainly used in the comprehensive management and control on the logistics and capital. 总体技术：基于Jsp + Servlet+ JavaBean技术实现：分为展现层、业务逻辑层、DAO层、PO层，在DAO实现上基于OCP原则采用抽象工厂方法设计模式，DAO层直接封装JDBC数据库操作；在统计报表实现上使用Jfreechart组件，同时还使用了FileUpload上传组件及验证码生成组件等。
Overall Technology: Implemented based on Jsp + Servlet+ JavaBean technology, it is divided into presentation layer, business logic layer, DAO layer, PO layer. The implement of DAO adopts the design mode of abstract factory method based on the OCP principle, and the DAO layer directly packages the operation of JDBC database; and the implement of statistics form adopts Jfreechart component, in the same time FileUpload uploading component and verification-code generation component, etc. are also used. 负责工作：分销商库存管理、数据库设计The responsible work: The design of distributor stocking management and database. 心得体会：对企业分销资源管理系统的业务需求有进一步理解，树结构实现方式，JDBC操作数据库，Jfreechart组件的运用、抽象工厂设计模式实现、一些技术细节等。
Experiences: Got further understanding of the service demand for distribution resources management system used in enterprises, and got further understanding of tree architecture implementation mode, JDBC operation database, the application of Jfreechart component, the implement of abstract factory design pattern, and some details. 2. XX军区首长机关办公自动化系统 2. Office Automation System for Head of ×× Military Area Command 项目介绍：为了加快部队信息化建设进程，提高首长机关的日常办公效率，促进司证后装备部门之间的协调工作，**军区结合自身实际，自主研发的一套OA系统。
总体分机构管理、权限管理、公文流转、系统管理、信息交流、信息发布、知识管理、项目管理、资产管理、考勤管理、人事档案、我的工作台等模块。
Project Introduction: In order to accelerate the information construction of the troops, enhance the routine work efficiency of head office, ensure the coordinated work among Command, Political Dept, Logistics Dept, and Equipment Dept, ×× Military Area Command combines self practical situation, and develops an OA system on the basis of itself. The overall system is divided into the following modules: institution management, rights management, documents flow, system management, information exchange, information release, knowledge management, project management, properties management, attendance management, HR archives, my workstation, and so on. 总体技术：基于Struts+ Spring+JBPM+ Hibernate的多层架构：展现层使用Struts来实现MVC模式，通过page-taglib实现分页，采用JSTL与自定义标签，使用Ajax技术使系统具有较好的用户体验；业务逻辑层利用Spring的IOC来维护业务对象之间的关联，利用Spring的AOP进行声明式事务管理，采用贫血Domain Object模型；持久化层使用hibernate来实现，通过DAO模式封装PO对象；将JBPM与Spring整合，实现公文流转模块；结合Freemarker模板技术实现动态表单定义模型；实现扩展的基于RBAC授权与认证模型；实现职能型的组织机构模型。
Overall Technology: A framework with multi layers based on Struts+ Spring+JBPM+ Hibernate. The presentation layer adopts Struts to realize MVC mode, adopts page-taglib to realize paging, adopts JSTL and custom tag, adopts Ajax technology to make system having better user experience; the business logic layer utilizes IOC of Spring to maintain the link between business objects, utilizes AOP of Spring to provide declarative transaction management, adopts anemia-type Domain Object model; the dada persistence layer adopts hibernate to realize, and adopts DAO mode to package PO object; Through the integration of JBPM and Spring to realize the document flow module; through the combination with Freemarker template technology to realize dynamic form definition model; to realize expanded authorize and authentication model based on RBCA; to realize functional organization model.责任描述：参与总体需求分析与架构设计、Domain Object设计、数据库设计、SSH架构搭建及JBPM的整合；同时实现主要模块机构管理、权限管理和公文流转核心模块的设计实现 Responsibility Description: Participated in the analysis of overall demands and the design of framework, the design of Domain Object, the design of database, the building of SSH framework, the integration of JBPM; In the same time realized the management of main module organizations, rights management, and the design and realization of document flow core module. 心得体会：对基于SSH架构的多层应用有深入体会，对工作流引擎JBPM的流程定义、部署和多种类型流程节点使用有进一步理解，基于RBAC模式能进行授权认证模块的实现，在该项目中的许多技术细节如：ACL的设计技巧，DWR实现动态授权，DOM4J实现初始化数据注入等等。
Experience: Got deep understanding of the multi layer application of SSH framework, and got further understanding of the flowing definition, deployment of workflow engine, JBPM, and the application of various kinds of flowing nodes. It is also further understood that based on RBAC mode the authorize and authentication module can be realized. Moreover, many technological details in this project, such as the design skills of ACL, the realization of dynamic authorization with DWR, the realization the injection of initial data with DOM4J, etc. are also understood further. 3. 企业客户关系管理系统 3.Customer Relationship Management System for Enterprises 项目介绍：本项目旨在“以客户为中心，以市场为导向”的企业经营管理模式，通过集中管理客户信息，并在市场部、销售部、服务部等间共享客户数据，从而实现企业市场营销、销售管理、客户服务和支持等经营流程信息化，达到提高客户服务效率和销售人员事务处理的效率，最终实现企业资源的有效利用，提高企业的客户服务质量与核心竞争力。
Project Introduction: This project aims at the enterprise management mode of “ Customer-oriented and Market-oriented”, It shares customer’s information with Marketing Dept, Sales Dept, and Service Dept through the concentrated management of customer’s information, so that realizes the informationization of enterprise’s operation flow such as marketing, sales management, customer service and support, and enhances the service efficiency for customers and the affairs treatment efficiency of sales staffs, finally realizes the effective utilization of enterprise resources and enhance its service quality and core competitive power. 总体技术：采用JSF + Spring + Ibatis + Jfreechart的技术实现：展现层JSF采用Apache的myfaces1.1.1实现包，JSF基于组件、事件和后台bean的交互来开发应用，而不再基于请求相应和标记来解决展现层问题；利用Spring来解耦合，管理依赖，将整个应用进行整合；持久化层采用轻量级的ORM解决方案ibatis；对系统中的多种报表生成采用Jfreechart技术。
Overall Technology: It is realized using JSF + Spring + Ibatis +Jfreechart technology. In presentation layer JSF adopts myfaces 1.1.1 of Apache to realize packet, JSF is developed and applied based on interaction of components, events and background bean instead of basing on request corresponding and marks to solve the problems of the presentation layer; it adopts Spring to decouple, manage dependence, and integrate the overall application; the data persistence layer adopts light duty ORM solution, ibatis; and the generation of various kinds of form in the system adopts Jfreechart technology 负责工作：参与需求分析，数据库分析设计，销售管理模块实现Responsible work: Participated in the demand analysis, the analysis and design of database, and the realization of sales management module. 心得体会：对本项目背景和需求有进一步理解，项目中使用的许多技术细节，如：使用Sitemesh控制页面布局，理解Sitemesh基本原理；利用POI库操纵Excel报表（批量导入和批量导出客户数据）等等。
Experiences: Got further understanding of the background and demand of this project, many details used in this project, such as using Sitemesh to control page layout, understanding the basic principle of Sitemesh; utilizing POI database to handle Excel forms (batch input and batch output the customer’s data), are also deeper understood)
