java.util
Class Arrays.ArrayList

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractList
          java.util.Arrays.ArrayList

All Implemented Interfaces:

Collection, List, RandomAccess, Serializable

Enclosing class:

Arrays

private static class Arrays.ArrayList

extends AbstractList

implements RandomAccess, Serializable

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.util.AbstractList

Field Summary

private Object[]	a
private static long	serialVersionUID

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

(package private)

Arrays.ArrayList(Object[] array)

Method Summary

boolean	contains(Object o) Returns true if this list contains the specified element.
Object	get(int index) Returns the element at the specified position in this list.
int	indexOf(Object o) Returns the index in this list of the first occurence of the specified element, or -1 if the list does not contain this element.
Object	set(int index, Object element) Replaces the element at the specified position in this list with the specified element (optional operation).
int	size() Returns the number of elements in this list.
Object[]	toArray() Returns an array containing all of the elements in this list in proper sequence.

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, equals, hashCode, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

addAll, containsAll, isEmpty, remove, removeAll, retainAll, toArray

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

a

private Object[] a

Constructor Detail

Arrays.ArrayList

Arrays.ArrayList(Object[] array)

Method Detail

size

public int size()

Description copied from interface: List

Returns the number of elements in this list. If this list contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Specified by:

size in interface List

Specified by:

size in class AbstractCollection

Returns:

the number of elements in this collection.

toArray

public Object[] toArray()

Description copied from interface: List

Returns an array containing all of the elements in this list in proper sequence. Obeys the general contract of the Collection.toArray method.

Specified by:

toArray in interface List

Overrides:

toArray in class AbstractCollection

Returns:

an array containing all of the elements in this collection.

get

public Object get(int index)

Description copied from class: AbstractList

Returns the element at the specified position in this list.

Specified by:

get in interface List

Specified by:

get in class AbstractList

Parameters:

index - index of element to return.

Returns:

the element at the specified position in this list.

set

public Object set(int index,
                  Object element)

Description copied from class: AbstractList

Replaces the element at the specified position in this list with the specified element (optional operation).

This implementation always throws an UnsupportedOperationException.

Specified by:

set in interface List

Overrides:

set in class AbstractList

Parameters:

index - index of element to replace.

element - element to be stored at the specified position.

Returns:

the element previously at the specified position.

indexOf

public int indexOf(Object o)

Description copied from class: AbstractList

Returns the index in this list of the first occurence of the specified element, or -1 if the list does not contain this element. More formally, returns the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.

This implementation first gets a list iterator (with listIterator()). Then, it iterates over the list until the specified element is found or the end of the list is reached.

Specified by:

indexOf in interface List

Overrides:

indexOf in class AbstractList

Parameters:

o - element to search for.

Returns:

the index in this List of the first occurence of the specified element, or -1 if the List does not contain this element.

contains

public boolean contains(Object o)

Description copied from interface: List

Returns true if this list contains the specified element. More formally, returns true if and only if this list contains at least one element e such that (o==null ? e==null : o.equals(e)).

Specified by:

contains in interface List

Overrides:

contains in class AbstractCollection

Parameters:

o - object to be checked for containment in this collection.

Returns:

true if this collection contains the specified element.