The Java™ Tutorials
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Quick Tour of Controlling Applications
Trail: Security Features in Java SE

Lesson: Quick Tour of Controlling Applications

Pre-requisite lesson: Creating a Policy File

This lesson shows how to use a security manager to grant or deny access to system resources for applications. The lesson also shows how resource accesses, such as reading or writing a file, are not permitted for applications that are run with a security manager unless explicitly allowed by a permission entry in a policy file.

The steps for this lesson are:

  1. Observe Application Freedom
  2. See How to Restrict Applications
  3. Set Up the Policy File to Grant the Required Permissions
  4. See the Policy File Effects

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