jquery library not found

hi all,

i reference jquery library in the lib folder my project.i add to reference index.html,but jquery library not found..can you help me please?

index.html

 <script type="text/javascript" src="lib/jquery142.js"></script>
  <script type="text/javascript" src="lib/jqueryui1.8.4.js"></script>
        <script type="text/javascript" src="lib/jquery-ui.min.js"></script>

bootstrap:

<script id="sap-ui-bootstrap"
  src="https://sapui5.hana.ondemand.com/resources/sap-ui-core.js"
  data-sap-ui-libs="sap.m"
  data-sap-ui-theme="sap_bluecrystal"
  data-sap-ui-xx-bindingSyntax="complex"
  data-sap-ui-resourceroots='{"sap.ui.test.fiori": "./"}'>
  </script>

lib folder: