<%@include file=" 'path-to-jsp' " %>

<input type=".."...>
<input type=".."...>
<input type=".."...>
<select>...

<form>
   // insert content of 'user-form.html' at compile time
   <button>Create User</button>
</form>

<form>
   // insert content of 'user-form.html' at compile time
   <button>Update User</button>
</form>