Guard (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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java.security
Interface Guard

All Known Implementing Classes:: Permission

public interface Guard

This interface represents a guard, which is an object that is used to protect access to another object.

This interface contains a single method, checkGuard, with a single object argument. checkGuard is invoked (by the GuardedObject getObject method) to determine whether or not to allow access to the object.

See Also:: GuardedObject

Method Summary

void checkGuard(Object object)
Determines whether or not to allow access to the guarded object object.

Method Detail

checkGuard

public void checkGuard(Object object)
                throws SecurityException

Determines whether or not to allow access to the guarded object object. Returns silently if access is allowed. Otherwise, throws a SecurityException.

Parameters:: object - the object being protected by the guard.
Throws:: SecurityException - if access is denied.