Please use Java.

Use a stack to reverse the words of a sentence. Keep reading words until you have a word that ends in a period, adding them onto a stack. When you have a word with a period, pop the words off and print them. Stop when there are no more words in the input. For example, you should turn the input:

Mary had a little lamb. Its fleece was white as snow.

into

Lamb little a had mary. Snow as white was fleece its.

Pay attention to capitalization and placement of the period.

Could you help me to complete the following code?

import java.util.*;

public class stringRev { public static void main(String[] args) { Stack stack = new Stack(); Scanner in = new Scanner( System.in ); System.out.println("Enter a sentence to reverse: "); while (in.hasNext()) { String token = in.next(); stack.push( token ); } String reverse = ""; while (stack.size() > 0) { reverse = reverse + " " + stack.pop(); } System.out.println( reverse ); } }