public class Palindrome {
  public static boolean isPalindrome(String stringToTest) {
  String workingCopy = removeJunk(stringToTest);
  String reversedCopy = reverse(workingCopy);
  return reversedCopy.equalsIgnoreCase(workingCopy);}
  protected static String removeJunk(String string) {
  int i, len = string.length();
  StringBuilder dest = new StringBuilder(len);
  char c;
  for (i = (len - 1); i >= 0; i--) {
  c = string.charAt(i);
  if (Character.isLetterOrDigit(c)) {
  StringBuilder append = dest.append(c);}}
  return dest.toString();}
  protected static String reverse(String string) {
  StringBuilder sb = new StringBuilder(string);
  return sb.reverse().toString();}
  public static void main(String[] args) {
  String string = "Madam, I'm Aminda.";
  System.out.println();
  System.out.println("Testing whether the following " + "string is a palindrome:");
  System.out.println("    " + string);
  System.out.println();
  if (isPalindrome(string)) {
  System.out.println("It IS a palindrome!");
  } else {
  System.out.println("It is a Palindrome!");}
  System.out.println();
  }}