Vector

java.lang.Object
- java.util.Vector

All Implemented Interfaces:

Serializable, Cloneable, Collection

Direct Known Subclasses:

BatchPrinter, CheckBoxGroup, MultiListSelect.SelectedItems, mVector, OwnedVector, Stack
```
public class Vector
extends Object
implements Collection, Cloneable, Serializable
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

protected int capacityIncrement

protected int elementCount

protected Object[] elementData
- Fields inherited from interface java.io.Serializable
  serialVersionUID

Fields
Modifier and Type	Field and Description
`protected int`	`capacityIncrement`
`protected int`	`elementCount`
`protected Object[]`	`elementData`

Constructor Summary

Constructors
Constructor and Description
`Vector()` Constructs an empty vector.
`Vector(int size)` Constructs an empty vector with a given initial size.
`Vector(int initialCapacity, int capacityIncrement)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(int index, Object element)`
`boolean`	`add(Object element)` Add an element to the end of the Vector.
`boolean`	`addAll(Collection c)` Add the contents of a given collection to this collection.
`boolean`	`addAll(int index, Collection c)`
`void`	`addElement(Object obj)` Add an element to the end of the Vector.
`int`	`capacity()`
`void`	`clear()` Clear the collection, such that a subsequent call to isEmpty() would return true.
`Object`	`clone()` Creates a new Vector with the same contents as this one.
`boolean`	`contains(Object elem)` Test whether this collection contains a given object as one of its elements.
`boolean`	`containsAll(Collection c)` Test whether this collection contains every element in a given collection.
`void`	`copyInto(Object[] destination)`
`Object`	`elementAt(int index)`
`Enumeration`	`elements()` Return an Enumeration over the elements in the Vector.
`void`	`ensureCapacity(int minimumCapacity)`
`Object`	`firstElement()`
`Object`	`get(int index)` Get the element at a particular index.
`int`	`indexOf(Object obj)`
`int`	`indexOf(Object elem, int startIndex)`
`void`	`insertElementAt(Object obj, int index)`
`boolean`	`isEmpty()` Test whether this collection is empty, that is, if size() == 0.
`Iterator`	`iterator()` Return an Iterator over the elements in the Vector.
`Object`	`lastElement()`
`int`	`lastIndexOf(Object obj)`
`int`	`lastIndexOf(Object elem, int index)`
`boolean`	`remove(Object obj)` Remove a single occurrence of an object from this collection.
`boolean`	`removeAll(Collection c)` Remove all elements of a given collection from this collection.
`void`	`removeAllElements()`
`boolean`	`removeElement(Object obj)`
`void`	`removeElementAt(int index)`
`boolean`	`retainAll(Collection c)` Remove all elements of this collection that are not contained in a given collection.
`void`	`setElementAt(Object obj, int index)`
`void`	`setSize(int newSize)`
`int`	`size()` Get the number of elements in this collection.
`Object[]`	`toArray()` Copy the current contents of this collection into an array.
`Object[]`	`toArray(Object[] a)` Copy the current contents of this collection into an array.
`String`	`toString()` Return a String representation of this object.
`void`	`trimToSize()`

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection
equals, hashCode

- Field Detail
  - elementData
```
protected Object[] elementData
```
  - elementCount
```
protected int elementCount
```
  - capacityIncrement
```
protected int capacityIncrement
```
- Constructor Detail
  - Vector
```
public Vector()
```
    Constructs an empty vector.
  - Vector
```
public Vector(int size)
```
    Constructs an empty vector with a given initial size. The size is the initial size of the vector's internal object array. The vector will grow as needed when objects are added.
  - Vector
```
public Vector(int initialCapacity,
              int capacityIncrement)
```
- Method Detail
  - clone
```
public Object clone()
```
    Creates a new Vector with the same contents as this one. The clone is shallow; elements are not cloned.
    
    Overrides:
    
    clone in class Object
    
    Returns:
    
    the clone of this vector
  - insertElementAt
```
public void insertElementAt(Object obj,
                            int index)
```
  - addElement
```
public void addElement(Object obj)
```
    Add an element to the end of the Vector.
    
    Parameters:
    
    obj - The object to add.
  - capacity
```
public final int capacity()
```
  - contains
```
public boolean contains(Object elem)
```
    Description copied from interface: Collection
    
    Test whether this collection contains a given object as one of its elements.
    
    Specified by:
    
    contains in interface Collection
    
    Parameters:
    
    elem - the element to look for.
    
    Returns:
    
    true if this collection contains at least one element e such that o == null ? e == null : o.equals(e).
  - copyInto
```
public void copyInto(Object[] destination)
```
  - elementAt
```
public Object elementAt(int index)
```
  - ensureCapacity
```
public void ensureCapacity(int minimumCapacity)
```
  - firstElement
```
public Object firstElement()
```
  - indexOf
```
public int indexOf(Object elem,
                   int startIndex)
```
  - indexOf
```
public int indexOf(Object obj)
```
  - isEmpty
```
public boolean isEmpty()
```
    Description copied from interface: Collection
    
    Test whether this collection is empty, that is, if size() == 0.
    
    Specified by:
    
    isEmpty in interface Collection
    
    Returns:
    
    true if this collection contains no elements.
  - lastElement
```
public Object lastElement()
```
  - lastIndexOf
```
public int lastIndexOf(Object elem,
                       int index)
```
  - lastIndexOf
```
public int lastIndexOf(Object obj)
```
  - removeAllElements
```
public void removeAllElements()
```
  - removeElement
```
public boolean removeElement(Object obj)
```
  - removeElementAt
```
public void removeElementAt(int index)
```
  - setElementAt
```
public void setElementAt(Object obj,
                         int index)
```
  - add
```
public void add(int index,
                Object element)
```
  - setSize
```
public void setSize(int newSize)
```
  - size
```
public int size()
```
    Description copied from interface: Collection
    
    Get the number of elements in this collection.
    
    Specified by:
    
    size in interface Collection
    
    Returns:
    
    the number of elements in the collection.
  - toString
```
public String toString()
```
    Description copied from class: Object
    
    Return a String representation of this object.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a String representing this object.
  - trimToSize
```
public void trimToSize()
```
  - elements
```
public Enumeration elements()
```
    Return an Enumeration over the elements in the Vector.
    
    Returns:
    
    an Enumeration over the elements in the Vector.
  - iterator
```
public Iterator iterator()
```
    Return an Iterator over the elements in the Vector.
    
    Specified by:
    
    iterator in interface Collection
    
    Returns:
    
    an Iterator over the elements in the Vector.
  - add
```
public boolean add(Object element)
```
    Add an element to the end of the Vector. This is the same as addElement().
    
    Specified by:
    
    add in interface Collection
    
    Parameters:
    
    element - the element to add.
    
    Returns:
    
    true if the collection was modified as a result of this action.
  - get
```
public Object get(int index)
```
    Get the element at a particular index. This is the same as elementAt().
    
    Parameters:
    
    index - the index of the element.
    
    Returns:
    
    the element at the specified index.
  - remove
```
public boolean remove(Object obj)
```
    Description copied from interface: Collection
    
    Remove a single occurrence of an object from this collection. That is, remove an element e, if one exists, such that o == null ? e == null : o.equals(e).
    
    Specified by:
    
    remove in interface Collection
    
    Parameters:
    
    obj - the object to remove.
    
    Returns:
    
    true if the collection changed as a result of this call, that is, if the collection contained at least one occurrence of o.
  - clear
```
public void clear()
```
    Description copied from interface: Collection
    
    Clear the collection, such that a subsequent call to isEmpty() would return true.
    
    Specified by:
    
    clear in interface Collection
  - addAll
```
public boolean addAll(Collection c)
```
    Description copied from interface: Collection
    
    Add the contents of a given collection to this collection.
    
    Specified by:
    
    addAll in interface Collection
    
    Parameters:
    
    c - the collection to add.
    
    Returns:
    
    true if the collection was modified as a result of this action.
  - addAll
```
public boolean addAll(int index,
                      Collection c)
```
  - containsAll
```
public boolean containsAll(Collection c)
```
    Description copied from interface: Collection
    
    Test whether this collection contains every element in a given collection.
    
    Specified by:
    
    containsAll in interface Collection
    
    Parameters:
    
    c - the collection to test for.
    
    Returns:
    
    true if for every element o in c, contains(o) would return true.
  - removeAll
```
public boolean removeAll(Collection c)
```
    Description copied from interface: Collection
    
    Remove all elements of a given collection from this collection. That is, remove every element e such that c.contains(e).
    
    Specified by:
    
    removeAll in interface Collection
    
    Returns:
    
    true if this collection was modified as a result of this call.
  - retainAll
```
public boolean retainAll(Collection c)
```
    Description copied from interface: Collection
    
    Remove all elements of this collection that are not contained in a given collection. That is, remove every element e such that !c.contains(e).
    
    Specified by:
    
    retainAll in interface Collection
    
    Returns:
    
    true if this collection was modified as a result of this call.
  - toArray
```
public Object[] toArray()
```
    Description copied from interface: Collection
    
    Copy the current contents of this collection into an array.
    
    Specified by:
    
    toArray in interface Collection
    
    Returns:
    
    an array of type Object[] and length equal to the size of this collection, containing the elements currently in this collection, in any order.
  - toArray
```
public Object[] toArray(Object[] a)
```
    Description copied from interface: Collection
    
    Copy the current contents of this collection into an array. If the array passed as an argument has length less than the size of this collection, an array of the same run-time type as a, and length equal to the size of this collection, is allocated using Reflection. Otherwise, a itself is used. The elements of this collection are copied into it, and if there is space in the array, the following element is set to null. The resultant array is returned. Note: The fact that the following element is set to null is only useful if it is known that this collection does not contain any null elements.
    
    Specified by:
    
    toArray in interface Collection
    
    Parameters:
    
    a - the array to copy this collection into.
    
    Returns:
    
    an array containing the elements currently in this collection, in any order.

Class Vector

Field Summary

Fields inherited from interface java.io.Serializable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Field Detail

elementData

elementCount

capacityIncrement

Constructor Detail

Vector

Vector

Vector

Method Detail

clone

insertElementAt

addElement

capacity

contains

copyInto

elementAt

ensureCapacity

firstElement

indexOf

indexOf

isEmpty

lastElement

lastIndexOf

lastIndexOf

removeAllElements

removeElement

removeElementAt

setElementAt

add

setSize

size

toString

trimToSize

elements

iterator

add

get

remove

clear

addAll

addAll

containsAll

removeAll

retainAll

toArray

toArray