java.util
Interfaces 
Collection
Comparator
Deque
Enumeration
EventListener
Iterator
List
ListIterator
Map
Map.Entry
NavigableMap
NavigableSet
Queue
RandomAccess
Set
SortedMap
SortedSet
Classes 
AbstractCollection
AbstractList
AbstractMap
AbstractSequentialList
AbstractSet
ArrayList
BitSet
Dictionary
EventObject
Formatter
HashMap
HashMap.Entry
HashSet
Hashtable
Hashtable.Entry
LinkedHashSet
LinkedList
LinkedList.Entry
Locale
Properties
Random
Stack
TreeMap
TreeMap.Entry
TreeMap.KeySet
TreeSet
Vector
Exceptions 
InvalidPropertiesFormatException
NoSuchElementException