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Java example source code file (Cookie.java)

This example source code file (Cookie.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

cookie, date, string, util

The Cookie.java example source code

/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.cookie;

import java.util.Date;

/**
 * Cookie interface represents a token or short packet of state information 
 * (also referred to as "magic-cookie") that the HTTP agent and the target 
 * server can exchange to maintain a session. In its simples form an HTTP 
 * cookie is merely a name / value pair.
 * 
 * @since 4.0
 */
public interface Cookie {

    /**
     * Returns the name.
     *
     * @return String name The name
     */
    String getName();

    /**
     * Returns the value.
     *
     * @return String value The current value.
     */
    String getValue();

    /**
     * Returns the comment describing the purpose of this cookie, or
     * <tt>null if no such comment has been defined.
     * 
     * @return comment 
     */
    String getComment();

    /**
     * If a user agent (web browser) presents this cookie to a user, the
     * cookie's purpose will be described by the information at this URL.
     */
    String getCommentURL();    
    
    /**
     * Returns the expiration {@link Date} of the cookie, or <tt>null
     * if none exists.
     * <p>Note: the object returned by this method is 
     * considered immutable. Changing it (e.g. using setTime()) could result
     * in undefined behaviour. Do so at your peril. </p>
     * @return Expiration {@link Date}, or <tt>null.
     */
    Date getExpiryDate();

    /**
     * Returns <tt>false if the cookie should be discarded at the end
     * of the "session"; <tt>true otherwise.
     *
     * @return <tt>false if the cookie should be discarded at the end
     *         of the "session"; <tt>true otherwise
     */
    boolean isPersistent();

    /**
     * Returns domain attribute of the cookie. The value of the Domain 
     * attribute specifies the domain for which the cookie is valid.
     * 
     * @return the value of the domain attribute.
     */
    String getDomain();

    /**
     * Returns the path attribute of the cookie. The value of the Path 
     * attribute specifies the subset of URLs on the origin server to which 
     * this cookie applies.
     * 
     * @return The value of the path attribute.
     */
    String getPath();

    /**
     * Get the Port attribute. It restricts the ports to which a cookie
     * may be returned in a Cookie request header.
     */
    int[] getPorts();

    /**
     * Indicates whether this cookie requires a secure connection.
     *
     * @return  <code>true if this cookie should only be sent
     *          over secure connections, <code>false otherwise.
     */
    boolean isSecure();

    /**
     * Returns the version of the cookie specification to which this
     * cookie conforms.
     *
     * @return the version of the cookie.
     */
    int getVersion();

    /**
     * Returns true if this cookie has expired.
     * @param date Current time
     * 
     * @return <tt>true if the cookie has expired.
     */
    boolean isExpired(final Date date);

}

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