public final class AccessControlContext extends Object
More specifically, it encapsulates a context and
 has a single method, checkPermission,
 that is equivalent to the checkPermission method
 in the AccessController class, with one difference: The AccessControlContext
 checkPermission method makes access decisions based on the
 context it encapsulates,
 rather than that of the current execution thread.
 
Thus, the purpose of AccessControlContext is for those situations where a security check that should be made within a given context actually needs to be done from within a different context (for example, from within a worker thread).
 An AccessControlContext is created by calling the
 AccessController.getContext method.
 The getContext method takes a "snapshot"
 of the current calling context, and places
 it in an AccessControlContext object, which it returns. A sample call is
 the following:
 
AccessControlContext acc = AccessController.getContext()
 Code within a different context can subsequently call the
 checkPermission method on the
 previously-saved AccessControlContext object. A sample call is the
 following:
 
acc.checkPermission(permission)
AccessController| Constructor and Description | 
|---|
| AccessControlContext(AccessControlContext acc,
                    DomainCombiner combiner)Create a new  AccessControlContextwith the givenAccessControlContextandDomainCombiner. | 
| AccessControlContext(ProtectionDomain[] context)Create an AccessControlContext with the given array of ProtectionDomains. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | checkPermission(Permission perm)Determines whether the access request indicated by the
 specified permission should be allowed or denied, based on
 the security policy currently in effect, and the context in
 this object. | 
| boolean | equals(Object obj)Checks two AccessControlContext objects for equality. | 
| DomainCombiner | getDomainCombiner()Get the  DomainCombinerassociated with thisAccessControlContext. | 
| int | hashCode()Returns the hash code value for this context. | 
public AccessControlContext(ProtectionDomain[] context)
context - the ProtectionDomains associated with this context.
 The non-duplicate domains are copied from the array. Subsequent
 changes to the array will not affect this AccessControlContext.NullPointerException - if context is nullpublic AccessControlContext(AccessControlContext acc, DomainCombiner combiner)
AccessControlContext with the given
 AccessControlContext and DomainCombiner.
 This constructor associates the provided
 DomainCombiner with the provided
 AccessControlContext.
 acc - the AccessControlContext associated
          with the provided DomainCombiner.combiner - the DomainCombiner to be associated
          with the provided AccessControlContext.NullPointerException - if the provided
          context is null.SecurityException - if a security manager is installed and the
          caller does not have the "createAccessControlContext"
          SecurityPermissionpublic DomainCombiner getDomainCombiner()
DomainCombiner associated with this
 AccessControlContext.
 DomainCombiner associated with this
          AccessControlContext, or null
          if there is none.SecurityException - if a security manager is installed and
          the caller does not have the "getDomainCombiner"
          SecurityPermissionpublic void checkPermission(Permission perm) throws AccessControlException
This method quietly returns if the access request is permitted, or throws a suitable AccessControlException otherwise.
perm - the requested permission.AccessControlException - if the specified permission
 is not permitted, based on the current security policy and the
 context encapsulated by this object.NullPointerException - if the permission to check for is null.public boolean equals(Object obj)
equals in class Objectobj - the object we are testing for equality with this object.Object.hashCode(), 
HashMappublic int hashCode()
hashCode in class ObjectObject.equals(java.lang.Object), 
System.identityHashCode(java.lang.Object) Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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