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
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