java.util
Class ArrayList<E>

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.util.AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
      extended by java.util.AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
          extended by java.util.ArrayList<E>
All Implemented Interfaces:
Serializable sample code for java.io.Serializable definition code for java.io.Serializable , Cloneable sample code for java.lang.Cloneable definition code for java.lang.Cloneable , Iterable sample code for java.lang.Iterable definition code for java.lang.Iterable <E>, Collection sample code for java.util.Collection definition code for java.util.Collection <E>, List sample code for java.util.List definition code for java.util.List <E>, RandomAccess sample code for java.util.RandomAccess definition code for java.util.RandomAccess
Direct Known Subclasses:
AttributeList sample code for javax.management.AttributeList definition code for javax.management.AttributeList , RoleList sample code for javax.management.relation.RoleList definition code for javax.management.relation.RoleList , RoleUnresolvedList sample code for javax.management.relation.RoleUnresolvedList definition code for javax.management.relation.RoleUnresolvedList

public class ArrayList<E>
extends AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
implements List sample code for java.util.List definition code for java.util.List <E>, RandomAccess sample code for java.util.RandomAccess definition code for java.util.RandomAccess , Cloneable sample code for java.lang.Cloneable definition code for java.lang.Cloneable , Serializable sample code for java.io.Serializable definition code for java.io.Serializable

Resizable-array implementation of the List interface. Implements all optional list operations, and permits all elements, including null. In addition to implementing the List interface, this class provides methods to manipulate the size of the array that is used internally to store the list. (This class is roughly equivalent to Vector, except that it is unsynchronized.)

The size, isEmpty, get, set, iterator, and listIterator operations run in constant time. The add operation runs in amortized constant time, that is, adding n elements requires O(n) time. All of the other operations run in linear time (roughly speaking). The constant factor is low compared to that for the LinkedList implementation.

Each ArrayList instance has a capacity. The capacity is the size of the array used to store the elements in the list. It is always at least as large as the list size. As elements are added to an ArrayList, its capacity grows automatically. The details of the growth policy are not specified beyond the fact that adding an element has constant amortized time cost.

An application can increase the capacity of an ArrayList instance before adding a large number of elements using the ensureCapacity operation. This may reduce the amount of incremental reallocation.

Note that this implementation is not synchronized. If multiple threads access an ArrayList instance concurrently, and at least one of the threads modifies the list structurally, it must be synchronized externally. (A structural modification is any operation that adds or deletes one or more elements, or explicitly resizes the backing array; merely setting the value of an element is not a structural modification.) This is typically accomplished by synchronizing on some object that naturally encapsulates the list. If no such object exists, the list should be "wrapped" using the Collections.synchronizedList method. This is best done at creation time, to prevent accidental unsynchronized access to the list:

        List list = Collections.synchronizedList(new ArrayList(...));
 

The iterators returned by this class's iterator and listIterator methods are fail-fast: if list is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove or add methods, the iterator will throw a ConcurrentModificationException. Thus, in the face of concurrent modification, the iterator fails quickly and cleanly, rather than risking arbitrary, non-deterministic behavior at an undetermined time in the future.

Note that the fail-fast behavior of an iterator cannot be guaranteed as it is, generally speaking, impossible to make any hard guarantees in the presence of unsynchronized concurrent modification. Fail-fast iterators throw ConcurrentModificationException on a best-effort basis. Therefore, it would be wrong to write a program that depended on this exception for its correctness: the fail-fast behavior of iterators should be used only to detect bugs.

This class is a member of the Java Collections Framework.

Since:
1.2
See Also:
Collection sample code for java.util.Collection definition code for java.util.Collection , List sample code for java.util.List definition code for java.util.List , LinkedList sample code for java.util.LinkedList definition code for java.util.LinkedList , Vector sample code for java.util.Vector definition code for java.util.Vector , Collections.synchronizedList(List) sample code for java.util.Collections.synchronizedList(java.util.List) definition code for java.util.Collections.synchronizedList(java.util.List) , Serialized Form

Field Summary
 
Fields inherited from class java.util.AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList
modCount sample code for java.util.AbstractList.modCount definition code for java.util.AbstractList.modCount
 
Constructor Summary
ArrayList sample code for java.util.ArrayList.ArrayList() definition code for java.util.ArrayList.ArrayList() ()
          Constructs an empty list with an initial capacity of ten.
ArrayList sample code for java.util.ArrayList.ArrayList(java.util.Collection) definition code for java.util.ArrayList.ArrayList(java.util.Collection) (Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
          Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator.
ArrayList sample code for java.util.ArrayList.ArrayList(int) definition code for java.util.ArrayList.ArrayList(int) (int initialCapacity)
          Constructs an empty list with the specified initial capacity.
 
Method Summary
 boolean add sample code for java.util.ArrayList.add(E) definition code for java.util.ArrayList.add(E) (E o)
          Appends the specified element to the end of this list.
 void add sample code for java.util.ArrayList.add(int, E) definition code for java.util.ArrayList.add(int, E) (int index, E element)
          Inserts the specified element at the specified position in this list.
 boolean addAll sample code for java.util.ArrayList.addAll(java.util.Collection) definition code for java.util.ArrayList.addAll(java.util.Collection) (Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
          Appends all of the elements in the specified Collection to the end of this list, in the order that they are returned by the specified Collection's Iterator.
 boolean addAll sample code for java.util.ArrayList.addAll(int, java.util.Collection) definition code for java.util.ArrayList.addAll(int, java.util.Collection) (int index, Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
          Inserts all of the elements in the specified Collection into this list, starting at the specified position.
 void clear sample code for java.util.ArrayList.clear() definition code for java.util.ArrayList.clear() ()
          Removes all of the elements from this list.
 Object sample code for java.lang.Object definition code for java.lang.Object clone sample code for java.util.ArrayList.clone() definition code for java.util.ArrayList.clone() ()
          Returns a shallow copy of this ArrayList instance.
 boolean contains sample code for java.util.ArrayList.contains(java.lang.Object) definition code for java.util.ArrayList.contains(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  elem)
          Returns true if this list contains the specified element.
 void ensureCapacity sample code for java.util.ArrayList.ensureCapacity(int) definition code for java.util.ArrayList.ensureCapacity(int) (int minCapacity)
          Increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.
 E get sample code for java.util.ArrayList.get(int) definition code for java.util.ArrayList.get(int) (int index)
          Returns the element at the specified position in this list.
 int indexOf sample code for java.util.ArrayList.indexOf(java.lang.Object) definition code for java.util.ArrayList.indexOf(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  elem)
          Searches for the first occurence of the given argument, testing for equality using the equals method.
 boolean isEmpty sample code for java.util.ArrayList.isEmpty() definition code for java.util.ArrayList.isEmpty() ()
          Tests if this list has no elements.
 int lastIndexOf sample code for java.util.ArrayList.lastIndexOf(java.lang.Object) definition code for java.util.ArrayList.lastIndexOf(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  elem)
          Returns the index of the last occurrence of the specified object in this list.
 E remove sample code for java.util.ArrayList.remove(int) definition code for java.util.ArrayList.remove(int) (int index)
          Removes the element at the specified position in this list.
 boolean remove sample code for java.util.ArrayList.remove(java.lang.Object) definition code for java.util.ArrayList.remove(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  o)
          Removes a single instance of the specified element from this list, if it is present (optional operation).
protected  void removeRange sample code for java.util.ArrayList.removeRange(int, int) definition code for java.util.ArrayList.removeRange(int, int) (int fromIndex, int toIndex)
          Removes from this List all of the elements whose index is between fromIndex, inclusive and toIndex, exclusive.
 E set sample code for java.util.ArrayList.set(int, E) definition code for java.util.ArrayList.set(int, E) (int index, E element)
          Replaces the element at the specified position in this list with the specified element.
 int size sample code for java.util.ArrayList.size() definition code for java.util.ArrayList.size() ()
          Returns the number of elements in this list.
 Object sample code for java.lang.Object definition code for java.lang.Object [] toArray sample code for java.util.ArrayList.toArray() definition code for java.util.ArrayList.toArray() ()
          Returns an array containing all of the elements in this list in the correct order.
<T> T[]
toArray sample code for java.util.ArrayList.toArray(T[]) definition code for java.util.ArrayList.toArray(T[]) (T[] a)
          Returns an array containing all of the elements in this list in the correct order; the runtime type of the returned array is that of the specified array.
 void trimToSize sample code for java.util.ArrayList.trimToSize() definition code for java.util.ArrayList.trimToSize() ()
          Trims the capacity of this ArrayList instance to be the list's current size.
 
Methods inherited from class java.util.AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList
equals sample code for java.util.AbstractList.equals(java.lang.Object) definition code for java.util.AbstractList.equals(java.lang.Object) , hashCode sample code for java.util.AbstractList.hashCode() definition code for java.util.AbstractList.hashCode() , iterator sample code for java.util.AbstractList.iterator() definition code for java.util.AbstractList.iterator() , listIterator sample code for java.util.AbstractList.listIterator() definition code for java.util.AbstractList.listIterator() , listIterator sample code for java.util.AbstractList.listIterator(int) definition code for java.util.AbstractList.listIterator(int) , subList sample code for java.util.AbstractList.subList(int, int) definition code for java.util.AbstractList.subList(int, int)
 
Methods inherited from class java.util.AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection
containsAll sample code for java.util.AbstractCollection.containsAll(java.util.Collection) definition code for java.util.AbstractCollection.containsAll(java.util.Collection) , removeAll sample code for java.util.AbstractCollection.removeAll(java.util.Collection) definition code for java.util.AbstractCollection.removeAll(java.util.Collection) , retainAll sample code for java.util.AbstractCollection.retainAll(java.util.Collection) definition code for java.util.AbstractCollection.retainAll(java.util.Collection) , toString sample code for java.util.AbstractCollection.toString() definition code for java.util.AbstractCollection.toString()
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 
Methods inherited from interface java.util.List sample code for java.util.List definition code for java.util.List
containsAll sample code for java.util.List.containsAll(java.util.Collection) definition code for java.util.List.containsAll(java.util.Collection) , equals sample code for java.util.List.equals(java.lang.Object) definition code for java.util.List.equals(java.lang.Object) , hashCode sample code for java.util.List.hashCode() definition code for java.util.List.hashCode() , iterator sample code for java.util.List.iterator() definition code for java.util.List.iterator() , listIterator sample code for java.util.List.listIterator() definition code for java.util.List.listIterator() , listIterator sample code for java.util.List.listIterator(int) definition code for java.util.List.listIterator(int) , removeAll sample code for java.util.List.removeAll(java.util.Collection) definition code for java.util.List.removeAll(java.util.Collection) , retainAll sample code for java.util.List.retainAll(java.util.Collection) definition code for java.util.List.retainAll(java.util.Collection) , subList sample code for java.util.List.subList(int, int) definition code for java.util.List.subList(int, int)
 

Constructor Detail

ArrayList sample code for java.util.ArrayList(int) definition code for java.util.ArrayList(int)

public ArrayList(int initialCapacity)
Constructs an empty list with the specified initial capacity.

Parameters:
initialCapacity - the initial capacity of the list.
Throws:
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if the specified initial capacity is negative

ArrayList sample code for java.util.ArrayList() definition code for java.util.ArrayList()

public ArrayList()
Constructs an empty list with an initial capacity of ten.


ArrayList sample code for java.util.ArrayList(java.util.Collection<? extends E>) definition code for java.util.ArrayList(java.util.Collection<? extends E>)

public ArrayList(Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator. The ArrayList instance has an initial capacity of 110% the size of the specified collection.

Parameters:
c - the collection whose elements are to be placed into this list.
Throws:
NullPointerException sample code for java.lang.NullPointerException definition code for java.lang.NullPointerException - if the specified collection is null.
Method Detail

trimToSize sample code for java.util.ArrayList.trimToSize() definition code for java.util.ArrayList.trimToSize()

public void trimToSize()
Trims the capacity of this ArrayList instance to be the list's current size. An application can use this operation to minimize the storage of an ArrayList instance.


ensureCapacity sample code for java.util.ArrayList.ensureCapacity(int) definition code for java.util.ArrayList.ensureCapacity(int)

public void ensureCapacity(int minCapacity)
Increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.

Parameters:
minCapacity - the desired minimum capacity.

size sample code for java.util.ArrayList.size() definition code for java.util.ArrayList.size()

public int size()
Returns the number of elements in this list.

Specified by:
size sample code for java.util.Collection.size() definition code for java.util.Collection.size() in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
size sample code for java.util.List.size() definition code for java.util.List.size() in interface List sample code for java.util.List definition code for java.util.List <E>
Specified by:
size sample code for java.util.AbstractCollection.size() definition code for java.util.AbstractCollection.size() in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Returns:
the number of elements in this list.

isEmpty sample code for java.util.ArrayList.isEmpty() definition code for java.util.ArrayList.isEmpty()

public boolean isEmpty()
Tests if this list has no elements.

Specified by:
isEmpty sample code for java.util.Collection.isEmpty() definition code for java.util.Collection.isEmpty() in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
isEmpty sample code for java.util.List.isEmpty() definition code for java.util.List.isEmpty() in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
isEmpty sample code for java.util.AbstractCollection.isEmpty() definition code for java.util.AbstractCollection.isEmpty() in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Returns:
true if this list has no elements; false otherwise.

contains sample code for java.util.ArrayList.contains(java.lang.Object) definition code for java.util.ArrayList.contains(java.lang.Object)

public boolean contains(Object sample code for java.lang.Object definition code for java.lang.Object  elem)
Returns true if this list contains the specified element.

Specified by:
contains sample code for java.util.Collection.contains(java.lang.Object) definition code for java.util.Collection.contains(java.lang.Object) in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
contains sample code for java.util.List.contains(java.lang.Object) definition code for java.util.List.contains(java.lang.Object) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
contains sample code for java.util.AbstractCollection.contains(java.lang.Object) definition code for java.util.AbstractCollection.contains(java.lang.Object) in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Parameters:
elem - element whose presence in this List is to be tested.
Returns:
true if the specified element is present; false otherwise.

indexOf sample code for java.util.ArrayList.indexOf(java.lang.Object) definition code for java.util.ArrayList.indexOf(java.lang.Object)

public int indexOf(Object sample code for java.lang.Object definition code for java.lang.Object  elem)
Searches for the first occurence of the given argument, testing for equality using the equals method.

Specified by:
indexOf sample code for java.util.List.indexOf(java.lang.Object) definition code for java.util.List.indexOf(java.lang.Object) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
indexOf sample code for java.util.AbstractList.indexOf(java.lang.Object) definition code for java.util.AbstractList.indexOf(java.lang.Object) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
elem - an object.
Returns:
the index of the first occurrence of the argument in this list; returns -1 if the object is not found.
See Also:
Object.equals(Object) sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object)

lastIndexOf sample code for java.util.ArrayList.lastIndexOf(java.lang.Object) definition code for java.util.ArrayList.lastIndexOf(java.lang.Object)

public int lastIndexOf(Object sample code for java.lang.Object definition code for java.lang.Object  elem)
Returns the index of the last occurrence of the specified object in this list.

Specified by:
lastIndexOf sample code for java.util.List.lastIndexOf(java.lang.Object) definition code for java.util.List.lastIndexOf(java.lang.Object) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
lastIndexOf sample code for java.util.AbstractList.lastIndexOf(java.lang.Object) definition code for java.util.AbstractList.lastIndexOf(java.lang.Object) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
elem - the desired element.
Returns:
the index of the last occurrence of the specified object in this list; returns -1 if the object is not found.

clone sample code for java.util.ArrayList.clone() definition code for java.util.ArrayList.clone()

public Object sample code for java.lang.Object definition code for java.lang.Object  clone()
Returns a shallow copy of this ArrayList instance. (The elements themselves are not copied.)

Overrides:
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() in class Object sample code for java.lang.Object definition code for java.lang.Object
Returns:
a clone of this ArrayList instance.
See Also:
Cloneable sample code for java.lang.Cloneable definition code for java.lang.Cloneable

toArray sample code for java.util.ArrayList.toArray() definition code for java.util.ArrayList.toArray()

public Object sample code for java.lang.Object definition code for java.lang.Object [] toArray()
Returns an array containing all of the elements in this list in the correct order.

Specified by:
toArray sample code for java.util.Collection.toArray() definition code for java.util.Collection.toArray() in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
toArray sample code for java.util.List.toArray() definition code for java.util.List.toArray() in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
toArray sample code for java.util.AbstractCollection.toArray() definition code for java.util.AbstractCollection.toArray() in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Returns:
an array containing all of the elements in this list in the correct order.
See Also:
Arrays.asList(Object[]) sample code for java.util.Arrays.asList(T...) definition code for java.util.Arrays.asList(T...)

toArray sample code for java.util.ArrayList.<T>toArray(T[]) definition code for java.util.ArrayList.<T>toArray(T[])

public <T> T[] toArray(T[] a)
Returns an array containing all of the elements in this list in the correct order; the runtime type of the returned array is that of the specified array. If the list fits in the specified array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the specified array and the size of this list.

If the list fits in the specified array with room to spare (i.e., the array has more elements than the list), the element in the array immediately following the end of the collection is set to null. This is useful in determining the length of the list only if the caller knows that the list does not contain any null elements.

Specified by:
toArray sample code for java.util.Collection.toArray(T[]) definition code for java.util.Collection.toArray(T[]) in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
toArray sample code for java.util.List.toArray(T[]) definition code for java.util.List.toArray(T[]) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
toArray sample code for java.util.AbstractCollection.toArray(T[]) definition code for java.util.AbstractCollection.toArray(T[]) in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Parameters:
a - the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose.
Returns:
an array containing the elements of the list.
Throws:
ArrayStoreException sample code for java.lang.ArrayStoreException definition code for java.lang.ArrayStoreException - if the runtime type of a is not a supertype of the runtime type of every element in this list.

get sample code for java.util.ArrayList.get(int) definition code for java.util.ArrayList.get(int)

public E get(int index)
Returns the element at the specified position in this list.

Specified by:
get sample code for java.util.List.get(int) definition code for java.util.List.get(int) in interface List sample code for java.util.List definition code for java.util.List <E>
Specified by:
get sample code for java.util.AbstractList.get(int) definition code for java.util.AbstractList.get(int) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
index - index of element to return.
Returns:
the element at the specified position in this list.
Throws:
IndexOutOfBoundsException sample code for java.lang.IndexOutOfBoundsException definition code for java.lang.IndexOutOfBoundsException - if index is out of range (index < 0 || index >= size()).

set sample code for java.util.ArrayList.set(int, E) definition code for java.util.ArrayList.set(int, E)

public E set(int index,
             E element)
Replaces the element at the specified position in this list with the specified element.

Specified by:
set sample code for java.util.List.set(int, E) definition code for java.util.List.set(int, E) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
set sample code for java.util.AbstractList.set(int, E) definition code for java.util.AbstractList.set(int, E) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
index - index of element to replace.
element - element to be stored at the specified position.
Returns:
the element previously at the specified position.
Throws:
IndexOutOfBoundsException sample code for java.lang.IndexOutOfBoundsException definition code for java.lang.IndexOutOfBoundsException - if index out of range (index < 0 || index >= size()).

add sample code for java.util.ArrayList.add(E) definition code for java.util.ArrayList.add(E)

public boolean add(E o)
Appends the specified element to the end of this list.

Specified by:
add sample code for java.util.Collection.add(E) definition code for java.util.Collection.add(E) in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
add sample code for java.util.List.add(E) definition code for java.util.List.add(E) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
add sample code for java.util.AbstractList.add(E) definition code for java.util.AbstractList.add(E) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
o - element to be appended to this list.
Returns:
true (as per the general contract of Collection.add).

add sample code for java.util.ArrayList.add(int, E) definition code for java.util.ArrayList.add(int, E)

public void add(int index,
                E element)
Inserts the specified element at the specified position in this list. Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).

Specified by:
add sample code for java.util.List.add(int, E) definition code for java.util.List.add(int, E) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
add sample code for java.util.AbstractList.add(int, E) definition code for java.util.AbstractList.add(int, E) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
index - index at which the specified element is to be inserted.
element - element to be inserted.
Throws:
IndexOutOfBoundsException sample code for java.lang.IndexOutOfBoundsException definition code for java.lang.IndexOutOfBoundsException - if index is out of range (index < 0 || index > size()).

remove sample code for java.util.ArrayList.remove(int) definition code for java.util.ArrayList.remove(int)

public E remove(int index)
Removes the element at the specified position in this list. Shifts any subsequent elements to the left (subtracts one from their indices).

Specified by:
remove sample code for java.util.List.remove(int) definition code for java.util.List.remove(int) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
remove sample code for java.util.AbstractList.remove(int) definition code for java.util.AbstractList.remove(int) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
index - the index of the element to removed.
Returns:
the element that was removed from the list.
Throws:
IndexOutOfBoundsException sample code for java.lang.IndexOutOfBoundsException definition code for java.lang.IndexOutOfBoundsException - if index out of range (index < 0 || index >= size()).

remove sample code for java.util.ArrayList.remove(java.lang.Object) definition code for java.util.ArrayList.remove(java.lang.Object)

public boolean remove(Object sample code for java.lang.Object definition code for java.lang.Object  o)
Removes a single instance of the specified element from this list, if it is present (optional operation). More formally, removes an element e such that (o==null ? e==null : o.equals(e)), if the list contains one or more such elements. Returns true if the list contained the specified element (or equivalently, if the list changed as a result of the call).

Specified by:
remove sample code for java.util.Collection.remove(java.lang.Object) definition code for java.util.Collection.remove(java.lang.Object) in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
remove sample code for java.util.List.remove(java.lang.Object) definition code for java.util.List.remove(java.lang.Object) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
remove sample code for java.util.AbstractCollection.remove(java.lang.Object) definition code for java.util.AbstractCollection.remove(java.lang.Object) in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Parameters:
o - element to be removed from this list, if present.
Returns:
true if the list contained the specified element.

clear sample code for java.util.ArrayList.clear() definition code for java.util.ArrayList.clear()

public void clear()
Removes all of the elements from this list. The list will be empty after this call returns.

Specified by:
clear sample code for java.util.Collection.clear() definition code for java.util.Collection.clear() in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
clear sample code for java.util.List.clear() definition code for java.util.List.clear() in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
clear sample code for java.util.AbstractList.clear() definition code for java.util.AbstractList.clear() in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>

addAll sample code for java.util.ArrayList.addAll(java.util.Collection<? extends E>) definition code for java.util.ArrayList.addAll(java.util.Collection<? extends E>)

public boolean addAll(Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
Appends all of the elements in the specified Collection to the end of this list, in the order that they are returned by the specified Collection's Iterator. The behavior of this operation is undefined if the specified Collection is modified while the operation is in progress. (This implies that the behavior of this call is undefined if the specified Collection is this list, and this list is nonempty.)

Specified by:
addAll sample code for java.util.Collection.addAll(java.util.Collection) definition code for java.util.Collection.addAll(java.util.Collection) in interface Collection sample code for java.util.Collection definition code for java.util.Collection <E>
Specified by:
addAll sample code for java.util.List.addAll(java.util.Collection) definition code for java.util.List.addAll(java.util.Collection) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
addAll sample code for java.util.AbstractCollection.addAll(java.util.Collection) definition code for java.util.AbstractCollection.addAll(java.util.Collection) in class AbstractCollection sample code for java.util.AbstractCollection definition code for java.util.AbstractCollection <E>
Parameters:
c - the elements to be inserted into this list.
Returns:
true if this list changed as a result of the call.
Throws:
NullPointerException sample code for java.lang.NullPointerException definition code for java.lang.NullPointerException - if the specified collection is null.
See Also:
AbstractCollection.add(Object) sample code for java.util.AbstractCollection.add(E) definition code for java.util.AbstractCollection.add(E)

addAll sample code for java.util.ArrayList.addAll(int, java.util.Collection<? extends E>) definition code for java.util.ArrayList.addAll(int, java.util.Collection<? extends E>)

public boolean addAll(int index,
                      Collection sample code for java.util.Collection definition code for java.util.Collection <? extends E> c)
Inserts all of the elements in the specified Collection into this list, starting at the specified position. Shifts the element currently at that position (if any) and any subsequent elements to the right (increases their indices). The new elements will appear in the list in the order that they are returned by the specified Collection's iterator.

Specified by:
addAll sample code for java.util.List.addAll(int, java.util.Collection) definition code for java.util.List.addAll(int, java.util.Collection) in interface List sample code for java.util.List definition code for java.util.List <E>
Overrides:
addAll sample code for java.util.AbstractList.addAll(int, java.util.Collection) definition code for java.util.AbstractList.addAll(int, java.util.Collection) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
index - index at which to insert first element from the specified collection.
c - elements to be inserted into this list.
Returns:
true if this list changed as a result of the call.
Throws:
IndexOutOfBoundsException sample code for java.lang.IndexOutOfBoundsException definition code for java.lang.IndexOutOfBoundsException - if index out of range (index < 0 || index > size()).
NullPointerException sample code for java.lang.NullPointerException definition code for java.lang.NullPointerException - if the specified Collection is null.

removeRange sample code for java.util.ArrayList.removeRange(int, int) definition code for java.util.ArrayList.removeRange(int, int)

protected void removeRange(int fromIndex,
                           int toIndex)
Removes from this List all of the elements whose index is between fromIndex, inclusive and toIndex, exclusive. Shifts any succeeding elements to the left (reduces their index). This call shortens the list by (toIndex - fromIndex) elements. (If toIndex==fromIndex, this operation has no effect.)

Overrides:
removeRange sample code for java.util.AbstractList.removeRange(int, int) definition code for java.util.AbstractList.removeRange(int, int) in class AbstractList sample code for java.util.AbstractList definition code for java.util.AbstractList <E>
Parameters:
fromIndex - index of first element to be removed.
toIndex - index after last element to be removed.