利用list实现了一个简单的消费项目列表管理程序，用java语言实现了LinkedList类，List类，Expense类，ItemExpense类，ItemDataExpense类，是一个很好的教学用程序。-Implementing an Expenselist using a class of list,supply the class of List,Expense,ItemExpense,ItemDataExpense.It is a good tutorial program .
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.004067s ]
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:0.082151s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000918s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001130s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000983s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003229s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000821s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006010s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015718s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001166s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 46333 [ RunTime:0.218030s ]
