com.google.gwt.emul.java.security.PrivilegedAction Maven / Gradle / Ivy

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package java.security;


/**
 * A computation to be performed with privileges enabled.  The computation is
 * performed by invoking AccessController.doPrivileged on the
 * PrivilegedAction object.  This interface is used only for
 * computations that do not throw checked exceptions; computations that
 * throw checked exceptions must use PrivilegedExceptionAction
 * instead.
 *
 * @see AccessController
 * @see AccessController#doPrivileged(PrivilegedAction)
 * @see PrivilegedExceptionAction
 */

public interface PrivilegedAction {
    /**
     * Performs the computation.  This method will be called by
     * AccessController.doPrivileged after enabling privileges.
     *
     * @return a class-dependent value that may represent the results of the
     *         computation. Each class that implements
     *         PrivilegedAction
     *         should document what (if anything) this value represents.
     * @see AccessController#doPrivileged(PrivilegedAction)
     * @see AccessController#doPrivileged(PrivilegedAction,
     *                                     AccessControlContext)
     */
    T run();
}