import java.util.Stack;

class Scratch { public static void main(String[] args) { // Create a Stack of integers Stack stack = new Stack<>();

    // Push elements onto the stack
    stack.push(1);
    stack.push(2);
    stack.push(3);

    // Display the top element of the stack
    System.out.println("Top element (peek): " + stack.peek());

    // Display the size of the stack
    System.out.println("Stack size: " + stack.size());

    // Pop the top element and display it
    System.out.println("Popped element: " + stack.pop());