The Java.util.Stack.size() method in Java is used to get the size of the Stack or the number of elements present in the Stack.
Syntax:
Stack.size()
Parameters: The method does not take any parameter.
Return Value: The method returns the size or the number of elements present in the Stack.
Below programs illustrate the Java.util.Stack.size() method:
Program 1: Stack with string elements.
// Java code to illustrate size()import java.util.*; public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<String> stack = new Stack<String>(); // Use add() method to add elements into the Stack stack.add("Welcome"); stack.add("To"); stack.add("Geeks"); stack.add("4"); stack.add("Geeks"); // Displaying the Stack System.out.println("Stack: " + stack); // Displaying the size of Stack System.out.println("The size is: " + stack.size()); }} |
Output:
Stack: [Welcome, To, Geeks, 4, Geeks] The size is: 5
Program 2: Stack with integer elements.
// Java code to illustrate size()import java.util.*; public class StackDemo { public static void main(String args[]) { // Creating an empty Stack Stack<Integer> stack = new Stack<Integer>(); // Use add() method to add elements into the Stack stack.add(10); stack.add(15); stack.add(30); stack.add(20); stack.add(5); // Displaying the Stack System.out.println("Stack: " + stack); // Displaying the size of Stack System.out.println("The size is: " + stack.size()); }} |
Output:
Stack: [10, 15, 30, 20, 5] The size is: 5
