21.11

java.util.Vector

THE PACKAGE JAVA.UTIL

21.11 The Class

java.util.Vector

A

Vector

, like an array, contains items that can be accessed using an integer

index. However, the size of a

Vector

 can grow and shrink as needed to accommo 

date adding and removing items after the

Vector

 has been created.

public class Vector implements Cloneable {

protected Object[] elementData;

protected int elementCount;

protected int capacityIncrement;

public Vector(int initialCapacity, int capacityIncrement);

public Vector(int initialCapacity);

public Vector();

public final String toString();

public Object clone();

public final Object elementAt(int index)

throws IndexOutOfBoundsException;

public final void setElementAt(Object obj, int index)

throws IndexOutOfBoundsException;

public final Object firstElement()

throws NoSuchElementException;

public final Object lastElement()

throws NoSuchElementException;

public final void addElement(Object obj);

public final void insertElementAt(Object obj, int index)

throws IndexOutOfBoundsException;

public final boolean removeElement(Object obj);

public final void removeElementAt(int index)

throws IndexOutOfBoundsException;

public final void removeAllElements();

public final boolean isEmpty();

public final int size();

public final void setSize(int newSize);

public final int capacity();

public final void ensureCapacity(int minCapacity);

public final void trimToSize();

public final void copyInto(Object anArray[])

throws IndexOutOfBoundsException;

public final Enumeration elements();

public final boolean contains(Object elem);

public final int indexOf(Object elem);

public final int indexOf(Object elem, int index)

throws IndexOutOfBoundsException;

public final int lastIndexOf(Object elem);

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