Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This class encapsulates the
state of a call stack. The checkPermission( )
method can make access-control decisions based on the saved state of
the call stack. Access-control checks are usually performed by the
AccessController.checkPermission( ) method, which
checks that the current call stack has the required permissions.
Sometimes, however, it is necessary to make access-control decisions
based on a previous state of the call stack. Call
AccessController.getContext( ) to create an
AccessControlContext for a particular call stack.
In Java 1.3, this class has constructors that specify a custom
context in the form of an array of
ProtectionDomain objects and that associate a
DomainCombiner object with an existing
AccessControlContext. This class is used only by
system-level code; typical applications rarely need to use it.

public final class

AccessControlContext {
// Public Constructors
public

AccessControlContext (ProtectionDomain[ ]

context );

1.3 public

AccessControlContext (AccessControlContext

acc , DomainCombiner

combiner );
// Public Instance Methods
public void

checkPermission (Permission

perm ) throws AccessControlException;

1.3 public DomainCombiner

getDomainCombiner ( );
// Public Methods Overriding Object
public boolean

equals (Object

obj );
public int

hashCode ( );
}

Passed To

AccessController.doPrivileged( ),
javax.security.auth.Subject.{doAsPrivileged( ),
getSubject( )}

Returned By

AccessController.getContext( )