Vector class

The Vector class implements a growable array of objects.

Constructor Summary

Vector(Collection<? extends E> c): Creates a vector containing the elements of the specified collection, in the order they are returned by the collection's iterator.
Vector(int initialCapacity): Creates an empty vector with the specified initial capacity and with its capacity increment equal to zero.
Vector(int initialCapacity, int capacityIncrement): Creates an empty vector with the specified initial capacity and capacity increment.

boolean add(E e): Appends the specified element to the end of this Vector.
void add(int index, E element): Inserts the specified element at the specified position in this Vector.
boolean addAll(Collection<? extends E> c): Appends all of the elements in the specified Collection to the end of this Vector, in the order that they are returned by the specified Collection's Iterator.
boolean addAll(int index, Collection<? extends E> c): Inserts all of the elements in the specified Collection into this Vector at the specified position.
void addElement(E obj): Adds the specified component to the end of this vector, increasing its size by one.
void insertElementAt(E obj, int index): Inserts the specified object as a component in this vector at the specified index.

int capacity(): Returns the current capacity of this vector.
void ensureCapacity(int minCapacity): Increases the capacity of this vector, if necessary, to ensure that it can hold at least the number of components specified by the minimum capacity argument.
void setSize(int newSize): Sets the size of this vector.
int size(): Returns the number of components in this vector.
void trimToSize(): Trims the capacity of this vector to be the vector's current size.

boolean contains(Object o): Returns true if this vector contains the specified element.
boolean containsAll(Collection<?> c): Returns true if this Vector contains all of the elements in the specified Collection.

void copyInto(Object[] anArray): Copies the components of this vector into the specified array.

Enumeration<E> elements(): Returns an enumeration of the components of this vector.

boolean equals(Object o): Compares the specified Object with this Vector for equality.

E elementAt(int index): Returns the component at the specified index.
E firstElement(): Returns the first component (the item at index 0) of this vector.
E get(int index): Returns the element at the specified position in this Vector.
E lastElement(): Returns the last component of the vector.

int indexOf(Object o): Returns the index of the first occurrence of the specified element in this vector, or -1 if this vector does not contain the element.
int indexOf(Object o, int index): Returns the index of the first occurrence of the specified element in this vector, searching forwards from index, or returns -1 if the element is not found.
int lastIndexOf(Object o): Returns the index of the last occurrence of the specified element in this vector, or -1 if this vector does not contain the element.
int lastIndexOf(Object o, int index): Returns the index of the last occurrence of the specified element in this vector, searching backwards from index, or returns -1 if the element is not found.

E remove(int index): Removes the element at the specified position in this Vector.
boolean remove(Object o): Removes the first occurrence of the specified element in this Vector If the Vector does not contain the element, it is unchanged.
boolean removeAll(Collection<?> c): Removes from this Vector all of its elements that are contained in the specified Collection.
void removeAllElements(): Removes all components from this vector and sets its size to zero.
boolean removeElement(Object obj): Removes the first (lowest-indexed) occurrence of the argument from this vector.
void removeElementAt(int index): Deletes the component at the specified index.

boolean retainAll(Collection<?> c): Retains only the elements in this Vector that are contained in the specified Collection.

E set(int index, E element): Replaces the element at the specified position in this Vector with the specified element.
void setElementAt(E obj, int index): Sets the component at the specified index of this vector to be the specified object.

List<E> subList(int fromIndex, int toIndex): Returns a view of the portion of this List between fromIndex, inclusive, and toIndex, exclusive.

Object[] toArray(): Returns an array containing all of the elements in this Vector in the correct order.
<T> T[] toArray(T[] a): Returns an array containing all of the elements in this Vector in the correct order; the runtime type of the returned array is that of the specified array.
String toString(): Returns a string representation of this Vector, containing the String representation of each element.

Revised from Open JDK source code