| AbstractCollection | A basic implementation of most of the methods in the Collection interface to
make it easier to create a collection. |
| AbstractList | A basic implementation of most of the methods in the List interface to make
it easier to create a List based on a random-access data structure. |
| AbstractMap | An abstract implementation of Map to make it easier to create your own
implementations. |
| AbstractSequentialList | Abstract superclass to make it easier to implement the List interface when
backed by a sequential-access store, such as a linked list. |
| AbstractSet | An abstract implementation of Set to make it easier to create your own
implementations. |
| ArrayList | An array-backed implementation of the List interface. |
| Arrays | This class contains various static utility methods performing operations on
arrays, and a method to provide a List "view" of an array to facilitate
using arrays with Collection-based APIs. |
| BitSet | This class can be thought of in two ways. |
| Calendar | This class is an abstract base class for Calendars, which can be
used to convert between Date objects and a set of
integer fields which represent YEAR,
MONTH, DAY, etc. |
| Collection | Interface that represents a collection of objects. |
| Collections | Utility class consisting of static methods that operate on, or return
Collections. |
| Comparator | Interface for objects that specify an ordering between objects. |
| ConcurrentModificationException | Exception that is thrown by the collections classes when it is detected that
a modification has been made to a data structure when this is not allowed,
such as when a collection is structurally modified while an Iterator is
operating over it. |
| Date | This class represents a specific time in milliseconds since the epoch. |
| Dictionary | A Dictionary maps keys to values; how it does that is
implementation-specific. |
| EmptyStackException | This exception is thrown by the Stack class when an attempt is made to pop
or otherwise access elements from an empty stack. |
| Enumeration | Interface for lists of objects that can be returned in sequence. |
| EventListener | Empty interface that is implemented by classes that need to receive
events. |
| EventListenerProxy | An abstract wrapper for event listeners. |
| EventObject | Represents Events fired by Objects. |
| GregorianCalendar | This class represents the Gregorian calendar, that is used in most
countries all over the world. |
| HashMap | This class provides a hashtable-backed implementation of the
Map interface. |
| HashSet | This class provides a HashMap-backed implementation of the Set interface. |
| Hashtable | A class which implements a hashtable data structure. |
| IdentityHashMap | This class provides a hashtable-backed implementation of the
Map interface, but uses object identity to do its hashing. |
| Iterator | An object which iterates over a collection. |
| LinkedHashMap | This class provides a hashtable-backed implementation of the
Map interface, with predictable traversal order. |
| LinkedHashSet | This class provides a hashtable-backed implementation of the
Set interface, with predictable traversal order. |
| LinkedList | Linked list implementation of the List interface. |
| List | An ordered collection (also known as a list). |
| ListIterator | An extended version of Iterator to support the extra features of Lists. |
| ListResourceBundle | A ListResouceBundle provides an easy way, to create your own
resource bundle. |
| Locale | Locales represent a specific country and culture. |
| Map | An object that maps keys onto values. |
| Map.Entry | A map entry (key-value pair). |
| MissingResourceException | This exception is thrown when a resource is missing. |
| NoSuchElementException | Exception thrown when an attempt is made to access an element that does not
exist. |
| Observable | This class represents an object which is observable. |
| Observer | Interface that is implemented when a class wants to be informed of changes
in Observable objects. |
| Properties | A set of persistent properties, which can be saved or loaded from a stream. |
| PropertyPermission | This class represents the permission to access and modify a property. |
| PropertyResourceBundle | This class is a concrete ResourceBundle that gets it
resources from a property file. |
| Random | This class generates pseudorandom numbers. |
| RandomAccess | Marker interface used to inform List implementations that
they support fast (usually constant time) random access. |
| ResourceBundle | A resource bundle contains locale-specific data. |
| Set | A collection that contains no duplicates. |
| SimpleTimeZone | This class represents a simple time zone offset and handles
daylight savings. |
| SortedMap | A map which guarantees its key's iteration order. |
| SortedSet | A set which guarantees its iteration order. |
| Stack | |
| StringTokenizer | This class splits a string into tokens. |
| TimeZone | This class represents a time zone offset and handles daylight savings. |
| Timer | Timer that can run TimerTasks at a later time. |
| TimerTask | Task that can be run at a later time if given to a Timer. |
| TooManyListenersException | This exception is part of the java event model. |
| TreeMap | This class provides a red-black tree implementation of the SortedMap
interface. |
| TreeSet | This class provides a TreeMap-backed implementation of the SortedSet
interface. |
| Vector | The Vector classes implements growable arrays of Objects. |
| WeakHashMap | A weak hash map has only weak references to the key. |