java.security

Class Permissions

public final class Permissions extends PermissionCollection implements 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: 1.1

Constructor Summary
	Permissions() This method initializes a new instance of `Permissions`.

Method Summary
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`.

Constructor Detail

Permissions

public Permissions()

This method initializes a new instance of Permissions.

Method Detail

add

public void add(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: perm the Permission to add

Throws: SecurityException if this collection is marked as read only

elements

public Enumeration<Permission> 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(Permission perm)

This method tests whether or not the specified Permission is implied by this PermissionCollection.

Parameters: perm the Permission to test

Returns: true if the specified permission is implied by this