Palindrome.java

import java.util.Scanner;   // for user input

public class Palindrome {
    public static void main(String args[]){

        Scanner scan = new Scanner(System.in);  // create scanner object

        String forwardText; // the text
        String reverse;     // the same text, backwards

        while (true) {
            // prompt user for word(s)
            System.out.print("Type a word or words (type exit to leave) ");

            // get user input, convert to lower case, remove all spaces
            forwardText = scan.nextLine().toLowerCase().replaceAll(" ", "");

            if (forwardText.equals("exit")) {
                break; // out from "while" loop
            } // end if

            reverse = "";

            for (int i = forwardText.length()-1; i >= 0; i-- ) {
                reverse += forwardText.charAt(i); // create reverse
            } // end for

            // test for palindrome
            if (forwardText.equals(reverse)) {
                System.out.println("It's a palindrome.");
            } else {
                System.out.println("That ain't no palindrome!");
            } // end if
        } // end while
    } // end main
} // end class