title: how to select element in multi select box in selenium webdriver
body: <p>Currently working on <strong>Selenium WebDriver</strong> and using <strong>Java</strong>.. I want to know to select values in <strong>Multi-select</strong> box. The options are already selected.. If i want to select any two or more option. how can perform the action.</p>
  
  <p>The HTML is follows:</p>
  
  <pre><code>&lt;select id="swpacksId" multiple="" style="width: 125px; display: none;" name="swPacks[]"&gt;
  &lt;option selected="" value="ADVIP"&gt;ADVIP&lt;/option&gt;
  &lt;option selected="" value="ADVLEG"&gt;ADVLEG&lt;/option&gt;
  &lt;option selected="" value="ADVSEC"&gt;ADVSEC&lt;/option&gt;
  &lt;option selected="" value="Boot"&gt;Boot&lt;/option&gt;
  &lt;option selected="" value="H323"&gt;H323&lt;/option&gt;
  &lt;option selected="" value="IBC"&gt;IBC&lt;/option&gt;
  &lt;option selected="" value="MULTI"&gt;MULTI&lt;/option&gt;
  &lt;option selected="" value="None"&gt;None&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/kWoHt.jpg" alt="enter image description here"></p>