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。
One of the most useful features that a directory offers is its yellow pages, or search, service. You can compose a query consisting of attributes of entries that you are seeking and submit that query to the directory. The directory then returns a list of entries that satisfy the query. For example, you could ask the directory for all entries with a bowling average greater than 200 or all entries that represent a person with a surname beginning with "Sch."
The DirContext interface provides several methods for searching the directory, with progressive degrees of complexity and power. The various aspects of searching the directory are covered in the following sections: