The Java Tutorials have been written for JDK 8.Java教程是为JDK 8编写的。Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.本页中描述的示例和实践没有利用后续版本中引入的改进，并且可能使用不再可用的技术。See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.有关Java SE 9及其后续版本中更新的语言特性的摘要，请参阅Java语言更改。
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.有关所有JDK版本的新功能、增强功能以及已删除或不推荐的选项的信息，请参阅JDK发行说明。
This trail provides everything you'll need to know about getting started with the Java programming language.本教程提供了有关Java编程语言入门的所有知识。
➤ The Java Technology PhenomenonJava技术现象 Provides an overview of Java technology as a whole.提供Java技术的总体概述。It discusses both the Java programming language and platform, providing a broad overview of what this technology can do and how it will make your life easier.它讨论了Java编程语言和平台，提供了这项技术可以做什么以及它将如何使您的生活更轻松的广泛概述。
➤ The "Hello World!" Application“Hello World！”应用程序 This hands-on approach describes what to download, what to install, and what to type, for creating a simple "Hello World!" application.这种实践方法描述了创建一个简单的“Hello World!”应用程序。It provides separate instructions for the NetBeans™ integrated development environment (NetBeans IDE), Microsoft Windows, Solaris™ Operating System (Solaris OS), Linux, and Mac users.它为NetBeans™集成开发环境（NetBeans IDE）、Microsoft Windows、Solaris™操作系统（Solaris OS）、Linux和Mac用户提供了单独的说明。
➤ A Closer Look at "Hello World!" Discusses the "Hello World!" application, describing each section of code in detail.讨论“Hello World!”应用程序，详细描述每一段代码。It covers source code comments, the 它包括源代码注释、HelloWorldApp class definition block, and the main method.HelloWorldApp类定义块和main方法。
➤ Common Problems (and Their Solutions)常见问题（及其解决方案） This is the place to go if you have trouble compiling or running the programs in this trail.如果您在编译或运行此路径中的程序时遇到问题，可以选择此路径。