code: public static boolean endsWithPunc(String str) {
  		if (str.endsWith(".") || str.endsWith("?") || str.endsWith("!") ||
  			    str.endsWith(",") || str.endsWith(":") || str.endsWith("\"") || 
  			    str.endsWith("'") || str.endsWith("''") || str.endsWith(";")) {
  		    return true;
  		}
  		
  		return false;
      }
docs: Ends with sign.
  
  @param str the string token to test
  @return true, if this token is ended with punctuation (such as ?:\;)