java.security
Class Permissions
java.lang.Object
|
+--java.security.PermissionCollection
|
+--java.security.Permissions
All Implemented Interfaces:
Serializable, Serializable
This class is a heterogeneous collection of permissions. It is
organized as a collection of PermissionCollection
's stored
in a hashtable. Each individual PermissionCollection
contains permissions of a single type. If a specific type of
Permission
does not provide a collection type to use
via its newPermissionCollection
method, then a default
collection type which stores its permissions in a hash table will be
used.
Since:Authors:- Aaron M. Renn <arenn@urbanophile.com>
- Eric Blake <ebb9@email.byu.edu>
Permissions
public Permissions()
This method initializes a new instance of Permissions
.
add
public void add(java.security.Permission perm)
This method adds a new Permission
to this collection. It
will be stored in a PermissionCollection
of the appropriate
type, as determined by calling newPermissionCollection
on
the specified permission (if an appropriate collection does not already
exist). If this object does not specify a particular type of collection,
a default collection, which stores in permissions in a hash table, will
be used.
Parameters:
Throws:
elements
public Enumeration elements()
This method returns an Enumeration
which contains a
list of all Permission
objects contained in this
collection.
Returns:
- an
Enumeration
of this collection's elements
implies
public boolean implies(java.security.Permission perm)
This method tests whether or not the specified Permission
is implied by this PermissionCollection
.
Parameters:
Returns:
- true if the specified permission is implied by this
PermissionCollection
's stored in a hashtable. Each individualPermissionCollection
contains permissions of a single type. If a specific type ofPermission
does not provide a collection type to use via itsnewPermissionCollection
method, then a default collection type which stores its permissions in a hash table will be used.