Java Vector elementAt() Method with Examples

by Online Tutorials Library July 22, 2014

Java Vector elementAt() Method

The elementAt() method of Java Vector class is used to get the element at the specified index in the vector.

Syntax

Following is the declaration of elementAt() method:

Parameter

DataType	Parameter	Description	Required/Optional
int	index	It is an index into this vector.	Required

Return

The elementAt() method returns an element at the specified index.

Exceptions

ArrayIndexOutOfBoundsException– This method has thrown an exception if the index is out of range i.e. index < 0 || index >= size().

Compatibility Version

Java 1.2 and above

Example 1

  import java.util.*;  public class VectorElementAtExample1 {    public static void main(String arg[]) {      //Create an empty vector      Vector<Integer> vec = new Vector<>();      //Add element in the vector      vec.add(1);      vec.add(2);      vec.add(3);          vec.add(4);      vec.add(5);      //Get an element at the specified index      System.out.println(“Element at index 1 is = “+vec.elementAt(1));      System.out.println(“Element at index 3 is = “+vec.elementAt(3));      }              }  

Test it Now

Output:

Element at index 1 is = 2  Element at index 3 is = 4

Example 2

  import java.util.*;  public class VectorElementAtExample2 {    public static void main(String arg[]) {      //Create an empty vector      Vector < String > colors = new Vector < String > ();      //Add elements in the vector            colors.add(“White”);            colors.add(“Green”);            colors.add(“Black”);            colors.add(“Pink”);            //Get an element at the specified index            System.out.println(“Element at 0th position = ” +colors.elementAt(0));            System.out.println(“Element at 2nd position = ” +colors.elementAt(2));      }              }  

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Output:

Element at 0th position = White  Element at 2nd position = Black

Example 3

  import java.util.*;  public class VectorElementAtExample3 {    public static void main(String arg[]) {      //Create an empty vector      Vector<Integer> vecObject = new Vector<Integer>();      //Add element in the vector      vecObject.add(11);      vecObject.add(22);      vecObject.add(33);              //Get an element at the specified index      System.out.println(“Element at index 5 is = “+vecObject.elementAt(5));          }              }  

Test it Now

Output:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 5 >= 3  at java.base/java.util.Vector.elementAt(Vector.java:496)  at myPackage.VectorElementAtExample3.main(VectorElementAtExample3.java:12)

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Java Vector elementAt() Method

Syntax

Parameter

Return

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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