java安装包选择
- Software Developers: JDK (Java SE Development Kit). For Java Developers. Includes a complete JRE plus tools for developing, debugging, and monitoring Java applications. 针对开发人员的sdk，JDK里面有很多用Java所编写的开发工具（如javac.exe、jar.exe等），而且都放置在 \lib\tools.jar 里
- Administrators running applications on a server: Server JRE (Server Java Runtime Environment) For deploying Java applications on servers. Includes tools for JVM monitoring and tools commonly required for server applications, but does not include browser integration (the Java plug-in), auto-update, nor an installer. Server JRE 包括 JVM 监测工具和服务器应用程序所需的常用的工具。
- End user running Java on a desktop: JRE: (Java Runtime Environment). Covers most end-users needs. Contains everything required to run Java applications on your system.JRE包括浏览器集成 Java 插件。
