The java.util.vector.size() method in Java is used to get the size of the Vector or the number of elements present in the Vector.
Syntax:
Vector.size()
Parameters: The method does not take any parameter.
Return Value: The method returns the size or the number of elements present in the Vector.
Below programs illustrate the Java.util.Vector.size() method:
Program 1: Vector with string elements.
// Java code to illustrate size()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 size of Vector        System.out.println("The size is: " + vec_tor.size());    }} |
Output:
Vector: [Welcome, To, Geeks, 4, Geeks] The size is: 5
Program 2: Vector with integer elements.
// Java code to illustrate size()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 size of Vector        System.out.println("The size is: " + vec_tor.size());    }} |
Output:
Vector: [10, 15, 30, 20, 5] The size is: 5
