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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.util

Source Cross Reference Class Diagram Java Document (Java Doc)

java.util .List

List
public interface List extends Collection<E>(Code)
	List is a collection which maintains an ordering for its elements. Every element in the list has an index.

Method Summary
public void	add(int location, E object) Inserts the specified object into this Vector at the specified location. The object is inserted before any previous element at the specified location.
public boolean	add(E object) Adds the specified object at the end of this List.
public boolean	addAll(int location, Collection<? extends E> collection) Inserts the objects in the specified Collection at the specified location in this List.
public boolean	addAll(Collection<? extends E> collection) Adds the objects in the specified Collection to the end of this List.
public void	clear() Removes all elements from this List, leaving it empty.
public boolean	contains(Object object) Searches this List for the specified object.
public boolean	containsAll(Collection collection) Searches this List for all objects in the specified Collection.
public boolean	equals(Object object) Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison. Parameters: object - Object the object to compare with this object.
public E	get(int location) Answers the element at the specified location in this List.
public int	hashCode() Answers an integer hash code for the receiver.
public int	indexOf(Object object) Searches this List for the specified object and returns the index of the first occurrence.
public boolean	isEmpty() Answers if this List has no elements, a size of zero.
public Iterator<E>	iterator() Answers an Iterator on the elements of this List.
public int	lastIndexOf(Object object) Searches this List for the specified object and returns the index of the last occurrence.
public ListIterator<E>	listIterator() Answers a ListIterator on the elements of this List.
public ListIterator<E>	listIterator(int location) Answers a ListIterator on the elements of this List.
public E	remove(int location) Removes the object at the specified location from this List.
public boolean	remove(Object object) Removes the first occurrence of the specified object from this List.
public boolean	removeAll(Collection collection) Removes all occurrences in this List of each object in the specified Collection.
public boolean	retainAll(Collection collection) Removes all objects from this List that are not contained in the specified Collection.
public E	set(int location, E object) Replaces the element at the specified location in this List with the specified object.
public int	size() Answers the number of elements in this List.
public List<E>	subList(int start, int end) Answers a List of the specified portion of this List from the start index to one less than the end index.
public Object[]	toArray() Answers an array containing all elements contained in this List.
public T[]	toArray(T[] array) Answers an array containing all elements contained in this List.

Method Detail

add
public void add(int location, E object)(Code)
	Inserts the specified object into this Vector at the specified location. The object is inserted before any previous element at the specified location. If the location is equal to the size of this List, the object is added at the end. Parameters: location - the index at which to insert Parameters: object - the object to add exception: UnsupportedOperationException - when adding to this List is not supported exception: ClassCastException - when the class of the object is inappropriate for thisList exception: IllegalArgumentException - when the object cannot be added to this List exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()`

add
public boolean add(E object)(Code)
	Adds the specified object at the end of this List. Parameters: object - the object to add true exception: UnsupportedOperationException - when adding to this List is not supported exception: ClassCastException - when the class of the object is inappropriate for thisList exception: IllegalArgumentException - when the object cannot be added to this List

addAll
public boolean addAll(int location, Collection<? extends E> collection)(Code)
	Inserts the objects in the specified Collection at the specified location in this List. The objects are added in the order they are returned from the Collection iterator. Parameters: location - the index at which to insert Parameters: collection - the Collection of objects true if this List is modified, false otherwise exception: UnsupportedOperationException - when adding to this List is not supported exception: ClassCastException - when the class of an object is inappropriate for this List exception: IllegalArgumentException - when an object cannot be added to this List exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()`

addAll
public boolean addAll(Collection<? extends E> collection)(Code)
	Adds the objects in the specified Collection to the end of this List. The objects are added in the order they are returned from the Collection iterator. Parameters: collection - the Collection of objects true if this List is modified, false otherwise exception: UnsupportedOperationException - when adding to this List is not supported exception: ClassCastException - when the class of an object is inappropriate for this List exception: IllegalArgumentException - when an object cannot be added to this List

clear
public void clear()(Code)
	Removes all elements from this List, leaving it empty. exception: UnsupportedOperationException - when removing from this List is not supported See Also: List.isEmpty See Also: List.size

contains
public boolean contains(Object object)(Code)
	Searches this List for the specified object. Parameters: object - the object to search for true if object is an element of this List, false otherwise

containsAll
public boolean containsAll(Collection collection)(Code)
	Searches this List for all objects in the specified Collection. Parameters: collection - the Collection of objects true if all objects in the specified Collection are elements ofthis List, false otherwise

equals
public boolean equals(Object object)(Code)
	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison. Parameters: object - Object the object to compare with this object. boolean `true` if the object is the same as thisobject `false` if it is different from this object. See Also: List.hashCode

get
public E get(int location)(Code)
	Answers the element at the specified location in this List. Parameters: location - the index of the element to return the element at the specified location exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()`

hashCode
public int hashCode()(Code)
	Answers an integer hash code for the receiver. Objects which are equal answer the same value for this method. the receiver's hash See Also: List.equals

indexOf
public int indexOf(Object object)(Code)
	Searches this List for the specified object and returns the index of the first occurrence. Parameters: object - the object to search for the index of the first occurrence of the object

isEmpty
public boolean isEmpty()(Code)
	Answers if this List has no elements, a size of zero. true if this List has no elements, false otherwise See Also: List.size

iterator
public Iterator<E> iterator()(Code)
	Answers an Iterator on the elements of this List. The elements are iterated in the same order that they occur in the List. an Iterator on the elements of this List See Also: Iterator

lastIndexOf
public int lastIndexOf(Object object)(Code)
	Searches this List for the specified object and returns the index of the last occurrence. Parameters: object - the object to search for the index of the last occurrence of the object

listIterator
public ListIterator<E> listIterator()(Code)
	Answers a ListIterator on the elements of this List. The elements are iterated in the same order that they occur in the List. a ListIterator on the elements of this List See Also: ListIterator

listIterator
public ListIterator<E> listIterator(int location)(Code)
	Answers a ListIterator on the elements of this List. The elements are iterated in the same order that they occur in the List. The iteration starts at the specified location. Parameters: location - the index at which to start the iteration a ListIterator on the elements of this List exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()` See Also: ListIterator

remove
public E remove(int location)(Code)
	Removes the object at the specified location from this List. Parameters: location - the index of the object to remove the removed object exception: UnsupportedOperationException - when removing from this List is not supported exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()`

remove
public boolean remove(Object object)(Code)
	Removes the first occurrence of the specified object from this List. Parameters: object - the object to remove true if this List is modified, false otherwise exception: UnsupportedOperationException - when removing from this List is not supported

removeAll
public boolean removeAll(Collection collection)(Code)
	Removes all occurrences in this List of each object in the specified Collection. Parameters: collection - the Collection of objects to remove true if this List is modified, false otherwise exception: UnsupportedOperationException - when removing from this List is not supported

retainAll
public boolean retainAll(Collection collection)(Code)
	Removes all objects from this List that are not contained in the specified Collection. Parameters: collection - the Collection of objects to retain true if this List is modified, false otherwise exception: UnsupportedOperationException - when removing from this List is not supported

set
public E set(int location, E object)(Code)
	Replaces the element at the specified location in this List with the specified object. Parameters: location - the index at which to put the specified object Parameters: object - the object to add the previous element at the index exception: UnsupportedOperationException - when replacing elements in this List is not supported exception: ClassCastException - when the class of an object is inappropriate for this List exception: IllegalArgumentException - when an object cannot be added to this List exception: IndexOutOfBoundsException - when `location < 0 \|\| >= size()`

size
public int size()(Code)
	Answers the number of elements in this List. the number of elements in this List

subList
public List<E> subList(int start, int end)(Code)
	Answers a List of the specified portion of this List from the start index to one less than the end index. The returned List is backed by this list so changes to one are reflected by the other. Parameters: start - the index at which to start the sublist Parameters: end - the index one past the end of the sublist a List of a portion of this List exception: IndexOutOfBoundsException - when `start < 0, start > end` or`end > size()`

toArray
public Object[] toArray()(Code)
	Answers an array containing all elements contained in this List. an array of the elements from this List

toArray
public T[] toArray(T[] array)(Code)
	Answers an array containing all elements contained in this List. If the specified array is large enough to hold the elements, the specified array is used, otherwise an array of the same type is created. If the specified array is used and is larger than this List, the array element following the collection elements is set to null. Parameters: array - the array an array of the elements from this List exception: ArrayStoreException - when the type of an element in this List cannot be storedin the type of the specified array

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