java.util.Vector.setElementAt() Method

Description

The setElementAt(E obj,int index) method is used to set the component at the specified index of this vector.The previous component at that position is discarded.

Declaration

Following is the declaration for java.util.Vector.setElementAt() method

public void setElementAt(E obj,int index)

Parameters

• obj − This is the component is to be set.

• index − This is the specified index where the component will be set.

Return Value

NA

Exception

ArrayIndexOutOfBoundsException − This exception is thrown if the accessed index is out of range.

Example

The following example shows the usage of java.util.Vector.setElementAt() method.

package com.tutorialspoint;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {

      // create an empty Vector vec with an initial capacity of 4      
      Vector<Integer> vec = new Vector<Integer>(4);

      // use add() method to add elements in the vector
      vec.add(4);
      vec.add(3);
      vec.add(2);
      vec.add(1);

      // set 16 at 2nd index position
      vec.setElementAt(22,2);

      // let us print all the elements available in vector
      System.out.println("Added numbers are :- "); 
      
      for (Integer number : vec) {         
         System.out.println("Number = " + number);
      }           
   }    
} 

Let us compile and run the above program, this will produce the following result.

Added numbers are :- 
Number = 4
Number = 3
Number = 22
Number = 1

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