基于JAVA语言的电子邮件系统的开发。详细地描述了JAVAMail组件的使用，相信对你有用...

alter table tbl_name add col_name type 例如,给表增加一列weight mysql>alter table pet add weight int 删除列 alter table tbl_name drop col_name 例如，删除列weight： mysql>alter table pet drop weight 改变列 alter table tbl_name modify col_name type 例如，改变weight的类型： mysql> alter table pet modify weight samllint 另一种方法是： alter table tbl_name change old_col_name col_name type 例如： mysql> alter table pet change weight weight samllint 给列更名 mysql>alter table pet change weight wei 给表更名 alter table tbl_name rename new_tbl 例如，把pet表更名为animal mysql>alter table pet rename animal -alter table tbl_name add col_name type for example, to form an increase in weight mysql> alter table pet add weight int Remove Columns alter table tbl_name drop col_name For example, the deletion of column weight: mysql> alter table pet drop weight change out alter table tbl_name modify col_name type for example, the type of weight change: mysql> alter table pet modify w

这是我收集的别人写的关于基本控件的例子，对初学者应该是很有用的！-This is my collection of other people on the basic controls example, for beginners should be very useful!

beyondplus留言本 JSP留言本-beyondplus voice of the voice mail of the JSP

一款用于触摸屏手机的小JAVA程序,-a java game for touch screen mobile phone for java support mobile

excel格式文件读入读出问题（在jbuilder环境下）-time enrollment problems (in the JBuilder environment)

采用java技术开发的树形控件，方便程序文件及资源的管理，谢谢大家使用。-Using java technology development tree controls to facilitate the program file and resource management, I would like to thank everyone to use.

java做的一个小程序，适合初学者！-a small program base on java. adapt for beginner.

用JAVA实现五子棋游戏，编译环境：Eclipse-a java project about game

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《struts 应用开发完全手册》中的源代码第一到第五章。-" Struts complete manual application development" in the source code of the first to the fifth chapter.