java series Multithreading can be downloaded understand multithreading download...

简介 JavaEE在开发的时候，如果是系统内部常量，一般提倡用枚举常量类，写在单独的类中，但是经常要修改的变量,比如数据源配置，如果存在数据库中，有种浪费。但是存在TXT中扩展性不好，就笔者观察，一般的程序员都喜欢把经常修改的常量存在xml文件或者properties文件。 存在xml文件最大的好处是扩展性很好，一般用sax或者dom这两个方向的框架，比如DOM4J,JDOM等。Sun推出的JAXM(Java API for XML Messaging)也是用的DOM4J。由于SAX的处理方式类似流媒体，是逐行的，不需要全部加载。而DOM是全部加载在内存，生成树。因而SAX的读取比DOM性能好，但是修改的话DOM略胜一筹。properties文件的扩展性不如xml，但是有很多xml没法实现的优势，比如加密之类的~ Helloworld 笔者根据自己开发中感受，写了一个工具包，用来体现读取xml或者properties的流程，大家在使用的时候记得修改文件路径。一共包含五个文件.本demo主要是用来模拟读取数据库的账户和密码的，读者可以在此基础上扩展。-Brief introduction JavaEE development at the time, if the system constants are generally used to promote constant enumeration type, write in a separate category, but often want to modify the variables, such as the data source configuration, if the database exist, in one waste. But the existence of bad TXT extension on my observation, the programmers in general are often modified to enjoy the constant existence xml documents or document properties. Xml files exist to expand the biggest benef

一个完整的学生管理系统，初学者很好的资料-a complete management system for students, beginners good information

一个可以显示系统目录树的控件,挺好用的-can show a system directory tree controls, very good use

Java设计模式(GOF)代码样例以及文档说明-Java design pattern (GOF), and sample code files note

Java日期选择控件完整源代码 Java语言开发的简洁实用的日期选择控件，源码文件功能说明： [DateChooser.java] Java 日期选择-Select the date a complete Java source code control, Java-developed simple and practical choices of date control, source code file Function Description: [DateChooser.java] Java Date selection

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计算圆面积的程序源代码-Calculation of circular area of source code

源码/软件简介: 云网论坛1.1RC国际版是采用JSP开发的集论坛、CMS（网站内容管理系统）、博客、聊天室、商城、交友、语音灌水等于一体的门户式社区。拥有CWBBS ( Cloud Web BBS )，您可以即刻搭建自己的集电子交易、用户交流于一体的个性化门户网站。 CWBBS现拥有国际化的版本，含中文简体语言和中文繁体语方。 -source/software Profile : Cloud Network Forum 1.1RC international version is a set of JSP development forum CMS (content management system), blog, chat rooms, a mall, friends, voice irrigation is one of the gateway-type communities. Have CWBBS (Cloud Web BBS), you can immediately build their own sets of electronic transactions, users exchange integrated personalized portal. CWBBS now has international versions, including Simplified Chinese language and traditional Chinese language side.

ArcObjects GIS应用开发：拷贝当前地图-ArcObjects GIS Application Development : Copy the current map

该文件是完成一个画图的工作-completion of the document is the work of a painter