Update index.html

Author: mistic100

index.html

@@ -110,6 +110,8 @@ <h3 id="backends">Backends</h3>
       josedacosta / <a href="https://github.com/josedacosta/jQueryQueryBuilderBundle">jQueryQueryBuilderBundle</a></li>
     <li><b>Rails</b> <i class="glyphicon glyphicon-chevron-right"></i>
       SixiS / <a href="https://github.com/SixiS/jquery_query_builder-rails">jquery_query_builder-rails</a></li>
+    <li><b>JAVA</b> <i class="glyphicon glyphicon-chevron-right"></i>
+      itfsw / <a href="https://github.com/itfsw/QueryBuilder">QueryBuilder</a></li>
   </ul>
 </section>