Guard (Java SE 9 & JDK 9 ) (original) (raw)

• All Known Implementing Classes:
  [AllPermission](../../java/security/AllPermission.html "class in java.security"), [AttachPermission](../../com/sun/tools/attach/AttachPermission.html "class in com.sun.tools.attach"), [AudioPermission](../../javax/sound/sampled/AudioPermission.html "class in javax.sound.sampled"), [AuthPermission](../../javax/security/auth/AuthPermission.html "class in javax.security.auth"), [AWTPermission](../../java/awt/AWTPermission.html "class in java.awt"), [BasicPermission](../../java/security/BasicPermission.html "class in java.security"), [CardPermission](../../javax/smartcardio/CardPermission.html "class in javax.smartcardio"), [DelegationPermission](../../javax/security/auth/kerberos/DelegationPermission.html "class in javax.security.auth.kerberos"), [FilePermission](../../java/io/FilePermission.html "class in java.io"), [FlightRecorderPermission](../../jdk/jfr/FlightRecorderPermission.html "class in jdk.jfr"), [FXPermission](../../javafx/util/FXPermission.html "class in javafx.util"), [InquireSecContextPermission](../../com/sun/security/jgss/InquireSecContextPermission.html "class in com.sun.security.jgss"), [JAXBPermission](../../javax/xml/bind/JAXBPermission.html "class in javax.xml.bind"), [JDIPermission](../../com/sun/jdi/JDIPermission.html "class in com.sun.jdi"), [LinkPermission](../../java/nio/file/LinkPermission.html "class in java.nio.file"), [LoggingPermission](../../java/util/logging/LoggingPermission.html "class in java.util.logging"), [ManagementPermission](../../java/lang/management/ManagementPermission.html "class in java.lang.management"), [MBeanPermission](../../javax/management/MBeanPermission.html "class in javax.management"), [MBeanServerPermission](../../javax/management/MBeanServerPermission.html "class in javax.management"), [MBeanTrustPermission](../../javax/management/MBeanTrustPermission.html "class in javax.management"), [NetPermission](../../java/net/NetPermission.html "class in java.net"), [NetworkPermission](../../jdk/net/NetworkPermission.html "class in jdk.net"), [Permission](../../java/security/Permission.html "class in java.security"), [PrivateCredentialPermission](../../javax/security/auth/PrivateCredentialPermission.html "class in javax.security.auth"), [PropertyPermission](../../java/util/PropertyPermission.html "class in java.util"), [ReflectPermission](../../java/lang/reflect/ReflectPermission.html "class in java.lang.reflect"), [RuntimePermission](../../java/lang/RuntimePermission.html "class in java.lang"), [SecurityPermission](../../java/security/SecurityPermission.html "class in java.security"), [SerializablePermission](../../java/io/SerializablePermission.html "class in java.io"), [ServicePermission](../../javax/security/auth/kerberos/ServicePermission.html "class in javax.security.auth.kerberos"), [SocketPermission](../../java/net/SocketPermission.html "class in java.net"), [SQLPermission](../../java/sql/SQLPermission.html "class in java.sql"), [SSLPermission](../../javax/net/ssl/SSLPermission.html "class in javax.net.ssl"), [SubjectDelegationPermission](../../javax/management/remote/SubjectDelegationPermission.html "class in javax.management.remote"), [UnresolvedPermission](../../java/security/UnresolvedPermission.html "class in java.security"), [URLPermission](../../java/net/URLPermission.html "class in java.net"), [WebServicePermission](../../javax/xml/ws/WebServicePermission.html "class in javax.xml.ws")

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.
Since:
1.2
See Also:
GuardedObject

• • Method Summary

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  void	checkGuard​(Object object)	Determines whether or not to allow access to the guarded objectobject.

• • Method Detail

     * #### checkGuard  
     void checkGuard​([Object](../../java/lang/Object.html "class in java.lang") object)  
              throws [SecurityException](../../java/lang/SecurityException.html "class in java.lang")  
     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](../../java/lang/SecurityException.html "class in java.lang")` \- if access is denied.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2017, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.