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Trail: Security Features in Java SE
Lesson: Quick Tour of Controlling Applets
Quick Tour of Controlling Applets
Observe Applet Restrictions
Set up a Policy File to Grant the Required Permission
Start Policy Tool
Grant the Required Permission
Save the Policy File
See the Policy File Effects
Home Page > Security Features in Java SE > Quick Tour of Controlling Applets
Set up a Policy File to Grant the Required Permission

> 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.

> This lesson uses the Policy Tool to create a policy file named `mypolicy`, in which you will add a policy entry that grants code from the directory where `WriteFile.class` is stored permission to write the `writetest` file.

> Follow these steps to create and modify your new policy file:

> 1. Start Policy Tool

> 2. Grant the Required Permission

> 3. Save the Policy File

> > Note for UNIX Users: The steps illustrate creating the policy file for a Windows system. The steps are exactly the same if you are working on a UNIX system. Where the text says to store the policy file in the `C:\Test` directory, you can store it in another directory. The examples in the step See the Policy File Effects and in the lesson Quick Tour of Controlling Applications assume that you stored it in the `~/test` directory.

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