Implement html multiple select in jsp

<select multiple>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="opel">Opel</option>
  <option value="audi">Audi</option>
</select>

I need to implement a multiple select list. How would i do it? I would be getting a list from backend whose size can vary.