通过一个坦克的小例子介绍了j2me精灵类的用法，碰撞，旋转等，适合初学者-Tank through a small example of the introduction of the Elven j2me usage categories, collision, rotation and so on, suitable for beginners
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001771s ]
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:0.144911s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001685s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001723s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004653s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001131s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016230s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002001s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 152647 [ RunTime:0.001288s ]
