程序包 java.security

接口 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.

另请参阅:

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

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()
throws Exception

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 PrivilegedExceptionAction should document what (if anything) this value represents.

抛出:

Exception - an exceptional condition has occurred. Each class that implements PrivilegedExceptionAction should document the exceptions that its run method can throw.

另请参阅:

AccessController.doPrivileged(PrivilegedExceptionAction), AccessController.doPrivileged(PrivilegedExceptionAction,AccessControlContext)