Java String abbreviate at word

//package com.demo2s;

public class Main {
   public static void main(String[] argv) throws Exception {
      String str = "this is a test test test";
      int maxlen = 20;
      String elipses = "";
      System.out.println(abbreviateAtWord(str, maxlen, elipses));
   }//from www  .  j a  v  a 2  s  . c o m

   public static String abbreviateAtWord(String str, int maxlen, String elipses) {
      if (str == null) {
         return "";
      }
      if (str.length() > maxlen) {
         maxlen -= elipses.length();
         int pos = str.lastIndexOf(' ', maxlen);
         if (pos == -1 || pos > maxlen) {
            str = "";
         } else {
            str = str.substring(0, pos);
            if (elipses.isEmpty() == false) {
               str += elipses;
            }
         }
      }
      return str;
   }
}