58  * <p>When the {@code add} method is called to add a Permission, the
  59  * Permission is stored in the appropriate PermissionCollection. If no such
  60  * collection exists yet, the Permission object's class is determined and the
  61  * {@code newPermissionCollection} method is called on that class to create
  62  * the PermissionCollection and add it to the Permissions object. If
  63  * {@code newPermissionCollection} returns null, then a default
  64  * PermissionCollection that uses a hashtable will be created and used. Each
  65  * hashtable entry stores a Permission object as both the key and the value.
  66  *
  67  * <p> Enumerations returned via the {@code elements} method are
  68  * not <em>fail-fast</em>.  Modifications to a collection should not be
  69  * performed while enumerating over that collection.
  70  *
  71  * @see Permission
  72  * @see PermissionCollection
  73  * @see AllPermission
  74  *
  75  *
  76  * @author Marianne Mueller
  77  * @author Roland Schemers

  78  *
  79  * @serial exclude
  80  */
  81 
  82 public final class Permissions extends PermissionCollection
  83 implements Serializable
  84 {
  85     /**
  86      * Key is permissions Class, value is PermissionCollection for that class.
  87      * Not serialized; see serialization section at end of class.
  88      */
  89     private transient ConcurrentHashMap<Class<?>, PermissionCollection> permsMap;
  90 
  91     // optimization. keep track of whether unresolved permissions need to be
  92     // checked
  93     private transient boolean hasUnresolved = false;
  94 
  95     // optimization. keep track of the AllPermission collection
  96     // - package private for ProtectionDomain optimization
  97     PermissionCollection allPermission;

  58  * <p>When the {@code add} method is called to add a Permission, the
  59  * Permission is stored in the appropriate PermissionCollection. If no such
  60  * collection exists yet, the Permission object's class is determined and the
  61  * {@code newPermissionCollection} method is called on that class to create
  62  * the PermissionCollection and add it to the Permissions object. If
  63  * {@code newPermissionCollection} returns null, then a default
  64  * PermissionCollection that uses a hashtable will be created and used. Each
  65  * hashtable entry stores a Permission object as both the key and the value.
  66  *
  67  * <p> Enumerations returned via the {@code elements} method are
  68  * not <em>fail-fast</em>.  Modifications to a collection should not be
  69  * performed while enumerating over that collection.
  70  *
  71  * @see Permission
  72  * @see PermissionCollection
  73  * @see AllPermission
  74  *
  75  *
  76  * @author Marianne Mueller
  77  * @author Roland Schemers
  78  * @since 1.2
  79  *
  80  * @serial exclude
  81  */
  82 
  83 public final class Permissions extends PermissionCollection
  84 implements Serializable
  85 {
  86     /**
  87      * Key is permissions Class, value is PermissionCollection for that class.
  88      * Not serialized; see serialization section at end of class.
  89      */
  90     private transient ConcurrentHashMap<Class<?>, PermissionCollection> permsMap;
  91 
  92     // optimization. keep track of whether unresolved permissions need to be
  93     // checked
  94     private transient boolean hasUnresolved = false;
  95 
  96     // optimization. keep track of the AllPermission collection
  97     // - package private for ProtectionDomain optimization
  98     PermissionCollection allPermission;