Java web: Load another data into second <select> when selection changed for first <select>
<p>One .jsp contains two <code>&lt;select&gt;</code> items. When selection changed in first <code>&lt;select&gt;</code>, items that second <code>&lt;select&gt;</code> contains should be reloaded from database. How can I do it without page reloading/redirect?</p>

<p>E.g. see any airline site: when you select departure city (airport), items of second dropbox are updated.</p>