java.util

类 AbstractCollection AbstractList AbstractMap AbstractSequentialList AbstractSet ArrayList Arrays BitSet Calendar Collection Collections Comparator ConcurrentModificationException Currency CurrencyData Date Dictionary EmptyStackException Enumeration EventListener EventListenerProxy EventObject GregorianCalendar HashMap HashSet Hashtable IdentityHashMap Iterator LinkedHashMap LinkedHashSet LinkedList List ListIterator ListResourceBundle Locale Map MissingResourceException NoSuchElementException Observable Observer Properties PropertyPermission PropertyResourceBundle Random RandomAccess ResourceBundle ResourceBundleEnumeration Set SimpleTimeZone SortedMap SortedSet Stack StringTokenizer TimeZone Timer TimerTask TooManyListenersException TreeMap TreeSet Vector WeakHashMap