验证用户名是否有效。用到了AJAX技术

使用ajaxanywhere的一个小的demo,个人感觉很不错,大家可以研究一下

本代码以J2SE 5.0为开发环境，选取Java应用的典型实例，循序渐进地介绍了Java语言的各种开发方法和技巧。共有19个章节，169个实例，内容涉及Java的语言基础、面向对象程序设计、数字处理、数组与集合、字符串、异常处理、文件操作、多线程、Swing编程、图形和多媒体编程、反射机制、网络程序设计、数据库编程、Applet、Java与XML、Java Mail、JSP与Servlet，并专门用一章介绍J2SE 5.0的新特性。-The code for the J2SE 5.0 development environment, select Java applications typical examples, step-by-step introduction of the Java language to develop a variety of techniques and skills. A total of 19 chapters, 169 examples, covering the language based on Java, object-oriented programming, data processing, array with a collection of strings, exception handling, file manipulation, multithreading, Swing programming, graphics and multimedia Cheng, reflex mechanisms, network programming, Database Programming, Applet, Java and XML, Java Mail, JSP and Servlet, and devotes one chapter J2SE 5.0 introduce new features.

宠物医院的小项目,,代码希望大家能用到 -PET

一个模拟银行系统的JAVA代码-a banking system simulation code JAVA

学习java反射机制的java例子,演示了如何使用Java反射机制

一个ＪＳＰ范例，基本功能都已经实现，只是在以下小功能上还需另加实现-a JSP example, the basic functions have now been achieved, but in the following function, there is still a small plus to achieve

JAVA编写的聊天工具，希望能和大家交流一下。请大家给点意见。-JAVA prepared chat tools, hopes to be able to share this. Please give points.

整个系统采用MVC开发模式，基于JSP+Servlet+JavaBean 前台美工使用了CSS+DIV布局-The entire system using MVC pattern of development, based on JSP+ Servlet+ JavaBean used front clip CSS+ DIV layout

1.开发环境： SunShine留言本v1.0所采用的开发环境为：J2SDK1.42+TOMCAT5.0+ACCESS2000 2.安装说明： SunShine留言本v1.0所有数据均采用数据库存储，采用JDBC连接池，直接连接数据库，不需要配置ODBC数据源即可直接运行。 3.运行环境： SunShine留言本v1.0是基于JSP/JavaBean开发的一套留言本系统，正常使用该软件您必须保证您的服务器满足如下要求： ①系统环境：J2SDK+TOMCAT或更高版本 ②数据库：ACCESS2000或更高版本 ③客户端：使用Windows系统＋IE5.0或更高版本 4.管理留言： 　SunShine留言本v1.0默认的管理员ID:admin；管理员密码：adminSNDG -1. Development Environment: SunShine Guestbook v1.0 development environment used for: J2SDK1.42+ TOMCAT5.0+ ACCESS20002. Installation instructions: SunShine Guestbook v1.0 database all data are stored, the use of JDBC connection pool, direct Connect database, do not need to configure ODBC data sources can be directly run. 3. Runtime Environment: SunShine Guestbook v1.0 is based on JSP/JavaBean developed a set of messages of the system, the normal use of the software you must ensure that your servers meet the following requirements: ① system environment: J2SDK+ TOMCAT or later ② Database: ACCESS2000 or late