程序包 java.security

接口 PrivilegedAction<T>

public interface PrivilegedAction<T>

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.

另请参阅:

AccessController, AccessController.doPrivileged(PrivilegedAction), PrivilegedExceptionAction

方法概要

限定符和类型	方法	说明
T	run()	Performs the computation.

方法详细资料

run

T run()

Performs the computation. This method will be called by AccessController.doPrivileged after enabling privileges.

返回:

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.

另请参阅:

AccessController.doPrivileged(PrivilegedAction), AccessController.doPrivileged(PrivilegedAction, AccessControlContext)