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Vector firstElement() Method in Java

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  • Last Updated : 17 Aug, 2018

The java.util.vector.firstElement() method in Java is used to retrieve or fetch the first element of the Vector. It returns the element present at the 0th index of the vector

Syntax:

Vector.firstElement()

Parameters: The method does not take any parameter.

Return Value: The method returns the first element present in the Vector.

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

Program 1:




// Java code to illustrate firstElement()
import java.util.*;
  
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 into the Vector
        vec_tor.add("Welcome");
        vec_tor.add("To");
        vec_tor.add("Geeks");
        vec_tor.add("4");
        vec_tor.add("Geeks");
  
        // Displaying the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Displaying the first element
        System.out.println("The first element is: "
                           + vec_tor.firstElement());
    }
}

Output:

Vector: [Welcome, To, Geeks, 4, Geeks]
The first element is: Welcome

Program 2:




// Java code to illustrate firstElement()
import java.util.*;
  
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 into the Vector
        vec_tor.add(10);
        vec_tor.add(15);
        vec_tor.add(30);
        vec_tor.add(20);
        vec_tor.add(5);
  
        // Displaying the Vector
        System.out.println("Vector: " + vec_tor);
  
        // Displaying the first element
        System.out.println("The first element is: "
                           + vec_tor.firstElement());
    }
}

Output:

Vector: [10, 15, 30, 20, 5]
The first element is: 10


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