Java SE (Java Platform, Standard Edition)

Is it possible to implement this drop-down box in a Java Swing application? I kept searching for this from the web, but I cant find relevant info. I cant make the optgroup function in neither JComboBox nor JList. Tell me how to do it, if you have this experience.


Thanks in advance!

<select>
  <optgroup label="Swedish Cars">
    <option value="volvo">Volvo</option>
    <option value="saab">Saab</option>
  </optgroup>
  <optgroup label="German Cars">
    <option value="mercedes">Mercedes</option>
    <option value="audi">Audi</option>
  </optgroup>
</select>