java.security

## Interface PrivilegedExceptionAction<T>

-     public interface PrivilegedExceptionAction<T>

  A computation to be performed with privileges enabled, that throws one or more checked exceptions. The computation is performed by invoking `AccessController.doPrivileged` on the `PrivilegedExceptionAction` object. This interface is used only for computations that throw checked exceptions; computations that do not throw checked exceptions should use `PrivilegedAction` instead.
  See Also:
    `AccessController`, `AccessController.doPrivileged(PrivilegedExceptionAction)`, `AccessController.doPrivileged(PrivilegedExceptionAction, AccessControlContext)`, `PrivilegedAction`

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `T` | `run()` Performs the computation.

- - ### Method Detail

    - #### run

          T run()
                throws Exception

      Performs the computation. This method will be called by `AccessController.doPrivileged` after enabling privileges.
      Returns:
        a class-dependent value that may represent the results of the computation. Each class that implements `PrivilegedExceptionAction` should document what (if anything) this value represents.
      Throws:
        `Exception` - an exceptional condition has occurred. Each class that implements `PrivilegedExceptionAction` should document the exceptions that its run method can throw.
      See Also:
        `AccessController.doPrivileged(PrivilegedExceptionAction)`, `AccessController.doPrivileged(PrivilegedExceptionAction,AccessControlContext)`

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