Getting at the Parameters

If you have an xhtml file like

<form method="get" action="/servlet/search">
  Question: <input type="text" name="query"><p>
  <input type="submit"></p>
</form>

You can get the value of the query parameter with

String query = req.getParameter("query");

If the form has multiple values as when using select, then you can get all the values with
```
String[] queries = req.getParameterValues("query");
```

Finally, you can get the names of the parameter with

public Enumeration ServletRequest.getParameterNames();