Cookies

You can create one with

public Cookie(String name, String value);

then add it to the response with

public void HttpServletResponse.addCookie(Cookie cookie);

The client will store 20 cookies per site, each one no more than 4Kb. You can retrieve the cookies with
```
public Cookie[] HttpServletRequest.getCookies();
```

You restrict the domain to which the client will send the cookie with

public void Cookie.setDomain(String pattern);

and the path with

public void Cookie.setPath(String uri);

The expiration date is set with

public void Cookie.setMaxAge(int expiry-second);

Set the comment associated with it:

public void Cookie.setComment(String comment);

Set a new value with

public void Cookie.setValue(String newValue);