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。
A policy file is an ASCII text file and can be composed via a text editor or the graphical Policy Tool utility demonstrated in this section. The Policy Tool saves you typing and eliminates the need for you to know the required syntax of policy files, thus reducing errors.策略文件是ASCII文本文件,可以通过文本编辑器或本节中演示的图形策略工具实用程序进行组合。策略工具为您节省了键入时间,并消除了您了解策略文件所需语法的需要,从而减少了错误。
This lesson uses the Policy Tool to create a policy file named 本课程使用策略工具创建一个名为examplepolicy
, in which you will add a policy entry that grants code from the examples
directory permission to write.examplepolicy
的策略文件,您将在其中添加一个策略条目,授予examples
目录中的代码写入权限。
Follow these steps to create and modify your new policy file:按照以下步骤创建和修改新策略文件:
C:\Test
directory, you can store it in another directory. C:\Test
目录中,则可以将其存储在另一个目录中。~/test
directory.