Collection <E> |
Collection
is the root of the collection hierarchy.
|
Comparator <T> |
A
Comparator
is used to compare two objects to determine their ordering with
respect to each other.
|
Deque <E> | A linear collection that supports element insertion and removal at both ends. |
Enumeration <E> | A legacy iteration interface. |
EventListener | EventListener is the superclass of all event listener interfaces. |
Formattable |
Classes that handle custom formatting for the 's' specifier of
Formatter
should implement the
Formattable
interface.
|
Iterator <E> | An iterator over a sequence of objects, such as a collection. |
List <E> |
A
List
is a collection which maintains an ordering for its elements.
|
ListIterator <E> | An ListIterator is used to sequence over a List of objects. |
Map <K, V> |
A
Map
is a data structure consisting of a set of keys and values
in which each key is mapped to a single value.
|
Map.Entry <K, V> |
Map.Entry
is a key/value mapping contained in a
Map
.
|
NavigableMap <K, V> |
A
SortedMap
extended with navigation methods returning the
closest matches for given search targets.
|
NavigableSet <E> |
A
SortedSet
extended with navigation methods reporting
closest matches for given search targets.
|
Observer |
Observer
is the interface to be implemented by objects that
receive notification of updates on an
Observable
object.
|
Queue <E> | A collection designed for holding elements prior to processing. |
RandomAccess |
RandomAccess is implemented by
List
implementations that support fast
(usually constant time) random access.
|
Set <E> |
A
Set
is a data structure which does not allow duplicate elements.
|
SortedMap <K, V> | A map that has its keys ordered. |
SortedSet <E> | SortedSet is a Set which iterates over its elements in a sorted order. |
AbstractCollection <E> |
Class
AbstractCollection
is an abstract implementation of the
Collection
interface.
|
AbstractList <E> |
AbstractList
is an abstract implementation of the
List
interface, optimized
for a backing store which supports random access.
|
AbstractMap <K, V> |
A base class for
Map
implementations.
|
AbstractMap.SimpleEntry <K, V> | A key-value mapping with mutable values. |
AbstractMap.SimpleImmutableEntry <K, V> | An immutable key-value mapping. |
AbstractQueue <E> |
This class provides skeletal implementations of some
Queue
operations.
|
AbstractSequentialList <E> | AbstractSequentialList is an abstract implementation of the List interface. |
AbstractSet <E> | An AbstractSet is an abstract implementation of the Set interface. |
ArrayDeque <E> |
Resizable-array implementation of the
Deque
interface.
|
ArrayList <E> |
ArrayList is an implementation of
List
, backed by an array.
|
Arrays |
Arrays
contains static methods which operate on arrays.
|
BitSet |
The
BitSet
class implements a
bit array
.
|
Calendar |
Calendar
is an abstract base class for converting between a
Date
object and a set of integer fields such as
YEAR
,
MONTH
,
DAY
,
HOUR
, and so on.
|
Collections |
Collections
contains static methods which operate on
Collection
classes.
|
Currency | A currency corresponding to an ISO 4217 currency code such as "EUR" or "USD". |
Date | A specific moment in time, with millisecond precision. |
Dictionary <K, V> | Note: Do not use this class since it is obsolete. |
EnumMap <K extends Enum <K>, V> |
An
Map
specialized for use with
Enum
types as keys.
|
EnumSet <E extends Enum <E>> | An EnumSet is a specialized Set to be used with enums as keys. |
EventListenerProxy |
This abstract class provides a simple wrapper for objects of type
EventListener
.
|
EventObject |
EventObject
s represent events.
|
FormattableFlags |
FormattableFlags are used as a parameter to
formatTo(Formatter, int, int, int)
and change the output
format in
Formattable
s.
|
Formatter |
Formats arguments according to a format string (like
printf
in C).
|
GregorianCalendar |
GregorianCalendar
is a concrete subclass of
Calendar
and provides the standard calendar used by most of the world.
|
HashMap <K, V> |
HashMap is an implementation of
Map
.
|
HashSet <E> | HashSet is an implementation of a Set. |
Hashtable <K, V> |
Hashtable is a synchronized implementation of
Map
.
|
IdentityHashMap <K, V> | IdentityHashMap is a variant on HashMap which tests equality by reference instead of equality by value. |
LinkedHashMap <K, V> |
LinkedHashMap is an implementation of
Map
that guarantees iteration order.
|
LinkedHashSet <E> | LinkedHashSet is a variant of HashSet. |
LinkedList <E> |
LinkedList is an implementation of
List
, backed by a doubly-linked list.
|
ListResourceBundle |
ListResourceBundle
is the abstract superclass of classes which provide
resources by implementing the
getContents()
method to return
the list of resources.
|
Locale |
Locale
represents a language/country/variant combination.
|
Objects | Utility methods for objects. |
Observable | Observable is used to notify a group of Observer objects when a change occurs. |
PriorityQueue <E> | A PriorityQueue holds elements on a priority heap, which orders the elements according to their natural order or according to the comparator specified at construction time. |
Properties |
A
Properties
object is a
Hashtable
where the keys and values
must be
String
s.
|
PropertyPermission | Legacy security code; do not use. |
PropertyResourceBundle |
PropertyResourceBundle
loads resources from an
InputStream
.
|
Random | This class provides methods that return pseudo-random values. |
ResourceBundle |
ResourceBundle
is an abstract class which is the superclass of classes which
provide
Locale
-specific resources.
|
ResourceBundle.Control | ResourceBundle.Control is a static utility class defines ResourceBundle load access methods, its default access order is as the same as before. |
Scanner | A parser that parses a text string of primitive types and strings with the help of regular expressions. |
ServiceLoader <S> | A service-provider loader. |
SimpleTimeZone |
SimpleTimeZone
is a concrete subclass of
TimeZone
that represents a time zone for use with a Gregorian calendar.
|
Stack <E> |
Stack
is a Last-In/First-Out(LIFO) data structure which represents a
stack of objects.
|
StringTokenizer |
Breaks a string into tokens; new code should probably use
split(String)
.
|
Timer |
Timers schedule one-shot or recurring
tasks
for execution.
|
TimerTask |
The
TimerTask
class represents a task to run at a specified time.
|
TimeZone |
TimeZone
represents a time zone, primarily used for configuring a
Calendar
or
SimpleDateFormat
instance.
|
TreeMap <K, V> | A map whose entries are sorted by their keys. |
TreeSet <E> | TreeSet is an implementation of SortedSet. |
UUID | UUID is an immutable representation of a 128-bit universally unique identifier (UUID). |
Vector <E> |
Vector is an implementation of
List
, backed by an array and synchronized.
|
WeakHashMap <K, V> | WeakHashMap is an implementation of Map with keys which are WeakReferences. |
Formatter.BigDecimalLayoutForm | The enumeration giving the available styles for formatting very large decimal numbers. |
ConcurrentModificationException |
An
ConcurrentModificationException
is thrown when a Collection is
modified and an existing iterator on the Collection is used to modify the
Collection as well.
|
DuplicateFormatFlagsException | The unchecked exception will be thrown out if there are duplicate flags given out in the format specifier. |
EmptyStackException |
An
EmptyStackException
is thrown if the pop/peek method of a stack is
executed on an empty stack.
|
FormatFlagsConversionMismatchException |
A
FormatFlagsConversionMismatchException
will be thrown if a
conversion and the flags are incompatible.
|
FormatterClosedException |
A
FormatterClosedException
will be thrown if the formatter has been
closed.
|
IllegalFormatCodePointException |
An
IllegalFormatCodePointException
will be thrown if an invalid
Unicode code point (defined by
isValidCodePoint(int)
) is
passed as a parameter to a Formatter.
|
IllegalFormatConversionException |
An
IllegalFormatConversionException
will be thrown when the parameter
is incompatible with the corresponding format specifier.
|
IllegalFormatException |
An
IllegalFormatException
is thrown when a format string that
contains either an illegal syntax or format specifier is transferred as a
parameter.
|
IllegalFormatFlagsException |
An
IllegalFormatFlagsException
will be thrown if the combination of
the format flags is illegal.
|
IllegalFormatPrecisionException |
An
IllegalFormatPrecisionException
will be thrown if the precision is
a negative other than -1 or in other cases where precision is not supported.
|
IllegalFormatWidthException |
An
IllegalFormatWidthException
will be thrown if the width is a
negative value other than -1 or in other cases where a width is not
supported.
|
InputMismatchException |
An
InputMismatchException
is thrown by a scanner to indicate that the
next token does not match or is out of range for the type specified in the
pattern.
|
InvalidPropertiesFormatException |
An
InvalidPropertiesFormatException
is thrown if loading the XML
document defining the properties does not follow the
Properties
specification.
|
MissingFormatArgumentException |
A
MissingFormatArgumentException
will be thrown if there is no
corresponding argument with the specified conversion or an argument index
that refers to a missing argument.
|
MissingFormatWidthException |
A
MissingFormatWidthException
will be thrown if the format width is
missing but is required.
|
MissingResourceException |
A
MissingResourceException
is thrown by ResourceBundle when a
resource bundle cannot be found or a resource is missing from a resource
bundle.
|
NoSuchElementException | Thrown when trying to retrieve an element past the end of an Enumeration or Iterator. |
TooManyListenersException |
A
TooManyListenersException
is thrown when an attempt is made to add
more than one listener to an event source which only supports a single
listener.
|
UnknownFormatConversionException |
An
UnknownFormatConversionException
will be thrown if the format
conversion is unknown.
|
UnknownFormatFlagsException |
An
UnknownFormatFlagsException
will be thrown if there is
an unknown flag.
|
ServiceConfigurationError |
Thrown when a service provider can't be loaded by
ServiceLoader
.
|