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java.lang.Objectjava.security.PermissionCollection
java.security.Permissions
public final class Permissions
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.
Constructor Summary | |
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Permissions()
This method initializes a new instance of Permissions . |
Method Summary | |
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void |
add(Permission perm)
This method adds a new Permission to this collection. |
Enumeration<Permission> |
elements()
This method returns an Enumeration which contains a
list of all Permission objects contained in this
collection. |
boolean |
implies(Permission perm)
This method tests whether or not the specified Permission
is implied by this PermissionCollection . |
Methods inherited from class java.security.PermissionCollection |
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isReadOnly, setReadOnly, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Permissions()
Permissions
.
Method Detail |
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public void add(Permission perm)
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.
add
in class PermissionCollection
perm
- the Permission
to add
SecurityException
- if this collection is marked as read onlypublic boolean implies(Permission perm)
Permission
is implied by this PermissionCollection
.
implies
in class PermissionCollection
perm
- the Permission
to test
public Enumeration<Permission> elements()
Enumeration
which contains a
list of all Permission
objects contained in this
collection.
elements
in class PermissionCollection
Enumeration
of this collection's elements
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