usermessagequeue.java

JSP线上水球游戏开发环境Tomcat 5.5.x + JDK 5.0（不要在JDK 1.4.x的JVM上跑）

package com.andowson.onlineuser;

import java.io.Serializable;
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;

/**
 * UserMessageQueue
 *    a singleton class
 *
 * @version 0.0.1 2004/12/22
 * @author Andowson Chang
 */
public class UserMessageQueue implements Serializable {

    private static final long serialVersionUID = 42L;
    
    private ConcurrentMap<String, ConcurrentLinkedQueue<UserMessage>> container = 
        new ConcurrentHashMap<String, ConcurrentLinkedQueue<UserMessage>>();
    
    // UserMessageQueue 衡琌