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.