Vector size() Method in Java
Last Updated :
11 Jul, 2025
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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:
Java
Java
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:
Program 2: Vector with integer elements.
Vector: [Welcome, To, Geeks, 4, Geeks] The size is: 5
// 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
