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

This
class stores an arbitrary collection of Permission
objects. When Permission objects are added with
the add( ) method, they are grouped into an
internal set of PermissionCollection objects that
contain only a single type of Permission. Use the
elements( ) method to obtain an
Enumeration of the Permission
objects in the collection. Use implies( ) to
determine if a specified Permission is implied by
any of the Permission objects in the collection.
Permissions is used by system code that manages
security policies. Applications rarely need to use it.

Figure 14-29. java.security.Permissions

public final class

Permissions extends PermissionCollection
implements Serializable {
// Public Constructors
public

Permissions ( );
// Public Methods Overriding PermissionCollection
public void

add (Permission

permission );
public java.util.Enumeration<Permission>

elements ( );
public boolean

implies (Permission

permission );
}