21.11

java.util.Vector

THE PACKAGE JAVA.UTIL

21.11.7

public final String toString()

This

Vector

 is represented in string form as a list of its items, enclosed in ASCII

square brackets and separated by the ASCII characters  

,

  (comma and space).

The

toString

 method is used to convert the items to strings; a null reference is

rendered as the string  

null

 .

The example fragment:

Vector v = new Vector();

v.addElement("Canberra");

v.addElement("Cancun");

v.addElement("Canandaigua");

System.out.println(v.toString());

produces the output:

[Canberra, Cancun, Canandaigua]

Overrides the

toString

 method of

Object

 ( 20.1.2).

21.11.8

public Object clone()

A copy of this

Vector

 is constructed and returned. The copy will contains a refer 

ence to a clone of the internal data array, not a reference to the original internal

data array of this

Vector

.

Overrides the

clone

 method of

Object

 ( 20.1.5).

21.11.9

public final Object elementAt(int index)

throws IndexOutOfBoundsException

The item of this

Vector

 with the specified

index

 is returned.

If the

index

 is negative or not less than the current size of this

Vector

, an

IndexOutOfBoundsException

 is thrown.

21.11.10

public final void setElementAt(Object obj, int index)

throws IndexOutOfBoundsException

The item of this

Vector

 with the specified

index

 is replaced with

obj

, so that

obj

is now the item at the specified

index

 within this

Vector

.

If the

index

 is negative or not less than the current size of this

Vector

, an

IndexOutOfBoundsException

 is thrown.

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