java.util
Interfaces 
Collection
Comparator
Enumeration
EventListener
Formattable
Iterator
List
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Map
Map.Entry
Observer
Queue
RandomAccess
Set
SortedMap
SortedSet
Classes 
AbstractCollection
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AbstractSequentialList
AbstractSet
ArrayList
Arrays
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Collections
Currency
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Dictionary
EnumMap
EnumSet
EventListenerProxy
EventObject
FormattableFlags
Formatter
GregorianCalendar
HashMap
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IdentityHashMap
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LinkedList
ListResourceBundle
Locale
Observable
PriorityQueue
Properties
PropertyPermission
PropertyResourceBundle
Random
ResourceBundle
Scanner
SimpleTimeZone
Stack
StringTokenizer
Timer
TimerTask
TimeZone
TreeMap
TreeSet
UUID
Vector
WeakHashMap
Enums 
Formatter.BigDecimalLayoutForm
Exceptions 
ConcurrentModificationException
DuplicateFormatFlagsException
EmptyStackException
FormatFlagsConversionMismatchException
FormatterClosedException
IllegalFormatCodePointException
IllegalFormatConversionException
IllegalFormatException
IllegalFormatFlagsException
IllegalFormatPrecisionException
IllegalFormatWidthException
InputMismatchException
InvalidPropertiesFormatException
MissingFormatArgumentException
MissingFormatWidthException
MissingResourceException
NoSuchElementException
TooManyListenersException
UnknownFormatConversionException
UnknownFormatFlagsException