Util file with methods for getting text with differences from changing old to new version of given text. Comparing old and new versions of String. Result is a string with highlighted by tag words which have changed. Methods:

• getComparisonString(String oldInstance, String newInstance) : Returns result string which combines old value with highlighted added and deleted words. * Added words are between [<added>] and [</added>]. * Deleted words are between [<deleted>] and [</deleted>].

  Example:

  newInstance= "Chcecie bajki. Byla sobie pchla szachrajka";
  oldInstance= "Chcecie bajki oto bajka. Byla sobie pchla szachrajka";
  result = "Chcecie [<added>]bajki. [</added>][<deleted>]bajki oto bajka. [</deleted>]Byla sobie pchla szachrajka ";

• getComparisonStringHtmlDecoratedWithClasses(String oldInstance, String newInstance) : Returns result string which combines old value with highlighted added and deleted words. * Added words are between <span class="addedWords"> and </span>. * Deleted words are between <span class="deletedWords"> and </span>.