官方网站
http://java.sun.com/Developer Resources for Java Technology
http://developers.sun.com/Sun Microsystems - Sun Developer Network (SDN)
http://developers.sun.com.cn/Sun 中国技术社区- Sun Developer Network (SDN) Home
http://www.oracle.com/technology/tech/java/index.htmlJava Developer Center | Oracle Technology Network
http://www.java.net/The Source for Java Technology Collaboration

综合网站
http://www.ibm.com/developerworks/cn/javaIBM developerWorks 中国
http://www.infoq.com/cnInfoQ: 时刻关注企业软件开发领域的变化与创新
http://www.javaeye.com/JavaEye Java编程 Spring框架 AJAX技术 Agile敏捷软件开发 ruby on rails实践
http://www.huihoo.com/Huihoo - 灰狐 - 中间件,数据库,操作系统,应用软件
http://www.cn-java.com/中文Java技术网
http://www.open-open.com/Java开源大全
http://www.java-cn.com/Java中文站
http://www.javathinker.org/Java Thinker
http://www.easyjf.com/EasyJF开源-让JavaEE程序开发变得更加轻松、简单
http://java.chinaitlab.com/中国IT实验室Java频道
http://java.ccidnet.com/赛迪网Java频道
http://dev.yesky.com/devjava/天极网Java频道
http://java.csdn.net/CSDN Java频道
http://www.cnjm.net/中国Java手机网
http://www.uml.org.cn/j2ee/j2ee.aspUML软件工程组织
http://best-java-source.whyandhow.org/最好的Java开源项目、开源软件、类库和源码排行榜
http://www.blogjava.net/BlogJava - 专注于Java技术
http://ajava.org/一个Java门户
http://www.java125.cn/Java学习
http://www.javathinker.org/JavaThinker主页（纯公益Java技术网站，非盈利）

专业论坛
http://www.jdon.com/jivejdon/J道--软件分析建模与架构设计社区
http://www.javaeye.com/forumsJava视线论坛
http://bbs.chinajavaworld.com/index.jspaJava中文世界论坛
http://spring.jactiongroup.net/SpringFramework中文论坛
http://www.javaworld.com.tw/jute/index.htmlJavaWorld@TW Java论坛
http://forums.sun.com/index.jspaOracle Java官方论坛
http://www.javagame.org.cn/Java游戏开发交流平台

项目网站
http://struts.apache.org/Apache Struts -- Model 2 framework for building Java web applications
http://ant.apache.org/Apache Ant -- Java-based build tool
http://tomcat.apache.org/Apache Tomcat -- A Java Servlet and JSP Container
http://turbine.apache.org/Turbine -- A Java Servlet Web Application Framework and associated component library
http://velocity.apache.org/Velocity -- A Java Templating Engine
http://www.hibernate.org/Hibernate -- An object-relational mapping (ORM) library for the Java
http://www.springsource.org/Spring -- An open source application framework for the Java platform
http://logging.apache.org/log4j/Log4j -- A Java-based logging utility

英文网站
http://www.theserverside.com/TheServerSide.com: your Java Community discussing server side development
http://www.java2s.com/Code/Java/CatalogJava.htmJava examples (example source code) Organized by topic
http://java.sys-con.com/Java Developer's Journal
http://java.dzone.com/Javalobby | The heart of the Java developer community
http://onjava.com/The Independent Source for Enterprise Java -- java development, open and emerging enterp
http://www.freejavaguide.com/Free Java Tutorials & Guide | Java programming source code
http://java-source.net/Open Source Software in Java
http://www.developer.com/java/Your Source for Java Information - Developer.com's Gamelan.com
http://www.docjar.com/DocJar: Search Open Source Java API
http://www.javaworld.com/Welcome to JavaWorld.com
http://java.about.com/Learn Java – Tutorials, Tips, Help, and Resources for Learning Java
http://www.jcp.org/en/home/indexThe Java Community Process(SM) Program

http://www.javaunion.org/  中国Java阵线联盟 
http://www.javaunion.com  Java阵线联盟(Java认证学习资料) 
http://www.chinajavaworld.com/  Java开发者(XML教程,模考试题1) 
http://javalovers.myetang.com  Java爱好者 
http://www.cn-java.com  中文Java技术网站 
http://www.cnjavaclub.com/  中国Java俱乐部 
http://www.52jsp.com/index.jsp  52JSP 
http://www.cnjsp.com/  中国JSP网站 
http://www.jsp001.com/ J SP001 
http://www.china-jsp.net/  JSP新升代/也有ASP 
http://www.javaxforum.com  javaxforum 开发指南，SCJP认证资源 
http://www.pconline.com.cn/pcedu/empolder/wz/jsp/index.html  pconline  的一些教程 
http://adionline.myrice.com/  阿迪在线