用Java写的计算器程序，有科学计算功能，适合于Java初学者使用学习。-Writing Java calculator with procedures, there is scientific computing functions, suitable for beginners to learn Java.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001302s ]
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:0.103364s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001232s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001199s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003652s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023340s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001401s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 45179 [ RunTime:0.001459s ]
