Java/J2EE面试宝典:核心概念与实战解密

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《Java/J2EE求职面试指南》是一本由K.Arulkumaran撰写的技术书籍,旨在帮助求职者准备Java和J2EE领域的面试。作者在编写过程中尽其所能确保信息的准确性,但必须明确的是,本书提供的信息是无任何明示或默示担保的,作者不承担因本书直接或间接导致的任何损失的责任。这本书分为两个主要部分,涵盖了Java语言基础、Swing、Applet、性能与内存泄漏等核心概念,以及企业级Java技术如J2EE、Servlet、JSP、JDBC、JNDI、RMI、EJB、JMS、XML、数据库调优和对象关系映射(ORM)、RUP和UML设计模式、Struts框架以及Web和应用服务器的最佳实践与性能优化。 第一部分专注于Java基础知识,包括语言基础概念,如类、对象、继承、多态等,以及如何在实际项目中使用Swing进行图形用户界面开发,以及Applet在浏览器中的应用。这部分还讨论了如何识别和解决性能问题,以及避免常见的内存泄漏陷阱,这对于理解Java程序的运行原理和高效开发至关重要。 第二部分深入探讨了企业级Java技术。J2EE(Java 2 Enterprise Edition)作为Java平台的核心组成部分,涵盖了Servlets(网络应用组件)和JSP(JavaServer Pages)的使用,这些都是构建动态网站的基础。接下来,JDBC(Java Database Connectivity)被提及,它让开发者能够连接并操作数据库。JNDI(Java Naming and Directory Interface)则涉及了Java应用程序对命名和目录服务的访问。 RMI(Remote Method Invocation)允许远程对象交互,而EJB(Enterprise JavaBeans)则介绍了面向企业级的应用组件。JMS(Java Message Service)提供了消息传递机制,XML(eXtensible Markup Language)在处理配置和数据交换时扮演关键角色。此外,SQL、数据库调优和ORM映射技术也是不可或缺的,这些有助于提升数据库性能和简化数据模型管理。 在软件开发方法论方面,RUP(Rational Unified Process)和UML(Unified Modeling Language)为架构设计和项目管理提供了标准化的框架。Struts框架则是在web应用开发中常用的MVC(Model-View-Controller)架构模式。最后,章节还会介绍主流的Web和应用服务器,以及最佳实践,帮助读者了解如何选择和优化它们以实现高效的系统性能。 《Java/J2EE求职面试指南》是一本实用且全面的工具书,不仅适合正在寻找相关工作机会的开发者,也适合希望通过深入了解Java和J2EE技术来提升自身竞争力的学习者。通过学习这本书,求职者可以准备应对各种面试挑战,并展示他们在Java和J2EE领域的深厚理解和实践经验。
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Java/J2EE Job Interview Companion Have you got the time to read 10 or more books and articles to add value prior to the interview? This book has been written mainly from the perspective of Java/J2EE job seekers and interviewers. There are numerous books and articles on the market covering specific topics like Java, J2EE, EJB, Design Patterns, ANT, CVS, Multi-Threading, Servlets, JSP, emerging technologies like AOP (Aspect Oriented Programming), Test Driven Development (TDD), Inversion of Control (IoC) etc. But from an interview perspective it is not possible to brush up on all these books where each book usually has from 300 pages to 600 pages. The basic purpose of this book is to cover all the core concepts and design/coding issues which, all Java/J2EE developers, designers and architects should be conversant with to perform well in their current jobs and to launch a successful career by doing well at interviews. The interviewer can also use this book to make sure that they hire the right candidate depending on their requirements. This book contains a wide range of topics relating to Java/J2EE development in a concise manner supplemented with diagrams, tables, sample codes and examples. This book is also appropriately categorised to enable you to choose the area of interest to you. This book will assist all Java/J2EE practitioners to become better at what they do. Usually it takes years to understand all the core concepts and design/coding issues when you rely only on your work experience. The best way to fast track this is to read appropriate technical information and proactively apply these in your work environment. It worked for me and hopefully it will work for you as well. I was also at one stage undecided whether to name this book “Java/J2EE core concepts and solving design/coding issues” or “Java/J2EE Job Interview Companion”. The reason I chose “Java/J2EE Job Interview Companion” is because these core concepts and design/coding issues helped me to be successful in my interviews and also gave me thumbs up in code reviews.