利用目前即时通讯工具在互联网上使用的广泛、便利、易用受欢迎的特点，结合了Java语言（Java 2 Standard Edition）的易用特点与性能优势，比如跨平台、安全性、多线程、网络Socket编程、流概念等方面，来设计基于Java虚拟机可跨平台特性的即时通讯工具，并对其体系结构、构成模块及系统关键技术进行了分析与设计。该系统具有安全、高效、实用、支持在不同系统平台运行等特点。
关键词：J2SE、即时通讯、跨平台（一次编写、到处执行）、多线程、JICQ
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001286s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.080556s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001023s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001199s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001018s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003227s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000939s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003606s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014870s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001320s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 420917 [ RunTime:0.017738s ]
