用java实现简单的：简单聊天程序
多线程
计数器
记事本
马鞍点
扇子
学生成绩管理系统
异常处理
字符串类-java with a simple realization : Chat simple procedures multithreading counter saddle point in the notebook fan student performance management system Exceptions string category
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002075s ]
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:0.085531s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002259s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001967s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002219s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003789s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002371s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003342s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015325s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002699s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 43818 [ RunTime:0.001258s ]
