JavaServer Pages, 3rd Edition

Name

Cookie

Synopsis

A Cookie object represents an HTTP cookie—a small amount of information sent by a server to a web browser, saved by the browser, and later sent back to the server with new requests. A cookie’s value can uniquely identify a client, so cookies are commonly used for session management. A cookie has a name, a single value, and optional attributes such as a comment, path and domain qualifiers, a maximum age, and a version number.

This class supports both the Version 0 (the informal specification first introduced by Netscape) and the Version 1 (formally defined by RFC 2109) cookie specifications. By default, cookies are created using Version 0 to ensure the best interoperability.

Synopsis

Class name:	javax.servlet.http.Cookie
Extends:	None
Implements:	Clonable
Implemented by:	Internal container-dependent class. Most containers use the reference implementation of the class (developed in the Apache Jakarta project)

Constructor

public Cookie(String name, String value)

Creates a new instance with the specified name and value. The name must conform to RFC 2109, meaning it can’t contain commas, semicolons, whitespace, or start with a dollar sign.

Methods

public Object clone( )

Overrides the standard Object.clone( ) method to return a copy of this cookie.

public String getComment( )

Returns the comment describing the purpose of this cookie or null if the cookie has no comment. For a cookie received from the browser, this method always returns null.

public String getDomain( ...