import java.util.Stack; Stack<Integer> stack = new Stack<>(); stack.push(1); stack.push(2); stack.push(3); stack.push(4); System.out.println(stack); System.out.println("Pop: " + stack.pop()); System.out.println("Pop: " + stack.pop()); System.out.println("Pop: " + stack.pop()); System.out.println(stack);
[1, 2, 3, 4]
Pop: 4
Pop: 3
Pop: 2
[1]
Pop: 4
Pop: 3
Pop: 2
[1]
