package thinkinginjava.containers;

// Demonstration of Stack Class.

import java.util.*;

import static thinkinginjava.util.Print.*;

enum Month {

JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER

}

public class Stacks {

public static void main(String[] args) {

Stack<String> stack = new Stack<String>();

for (Month m : Month.values())

stack.push(m.toString());

print("stack = " + stack);

// Treating a stack as a Vector:

stack.addElement("The last line");

print("element 5 = " + stack.elementAt(5));

print("popping elements:");

while (!stack.empty())

printnb(stack.pop() + " ");

// Using a LinkedList as a Stack:

LinkedList<String> lstack = new LinkedList<String>();

for (Month m : Month.values())

lstack.addFirst(m.toString());

print("lstack = " + lstack);

while (!lstack.isEmpty())

printnb(lstack.removeFirst() + " ");

// Using the Stack class from

// the Holding Your Objects Chapter:

thinkinginjava.util.Stack<String> stack2 = new thinkinginjava.util.Stack<String>();

for (Month m : Month.values())

stack2.push(m.toString());

print("stack2 = " + stack2);

while (!stack2.empty())

printnb(stack2.pop() + " ");

}

}