Vector elementAt() Method in Java

The java.util.vector.elementAt(int pos) method is used to fetch or retrieve an element at a specific index from a Vector. 

Syntax:

Vector.elementAt(int pos)

Parameters: This method accepts a mandatory parameter pos of integer data type that specifies the position or index of the element to be fetched from the Vector. 

Return Value: The method returns the element present at the position specified by the parameter pos. 

Below programs illustrate the Java.util.Vector.get() method: 

Program 1:

Java

// Java code to illustrate elementAt() method
import java.util.Vector;

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

        // Creating an empty Vector
        Vector<String> vec_tor = new Vector<String>();

        // Use add() method to add elements in the Vector
        vec_tor.add("Geeks");
        vec_tor.add("for");
        vec_tor.add("Geeks");
        vec_tor.add("10");
        vec_tor.add("20");

        // Displaying the Vector
        System.out.println("Vector: "
                           + vec_tor);

        // Fetching the specific element from the Vector
        System.out.println("The element is: "
                           + vec_tor.elementAt(3));
    }
}

Output:

Vector: [Geeks, for, Geeks, 10, 20]
The element is: 10

Program 2:

Java

// Java code to illustrate elementAt() method
import java.util.Vector;

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

        // Creating an empty Vector
        Vector<Integer> vec_tor = new Vector<Integer>();

        // Use add() method to add elements in the Vector
        vec_tor.add(1);
        vec_tor.add(2);
        vec_tor.add(3);
        vec_tor.add(4);
        vec_tor.add(5);

        // Displaying the Vector
        System.out.println("Vector: " + vec_tor);

        // Fetching the specific element from the Vector
        System.out.println("The element is: "
                           + vec_tor.elementAt(1));
    }
}

Output:

Vector: [1, 2, 3, 4, 5]
The element is: 2

Time complexity: O(1),
Auxiliary space: O(n).  // n is the size of the vector.