Java学习的基础程序

同人类任何语言一样，Java为我们提供了一种表达思想的方式。如操作得当，同其他方式相比，随着问题变得愈大和愈复杂，这种表达方式的方便性和灵活性会显露无遗。(Like any human language, Java provides us with a way of expression. If the operation is properly compared with other means, as the issues become larger and more complex, the expression of the convenience and flexibility will be shown.)

本程序可是使用者浏览相关产品的信息，并发表评论，管理员可以对产品进行删除、添加等修改(Product information release)

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

MES的设置是控管MES的核心之一，好的控管不仅加强全面的管控点，还可以减少日常技术人员的维护量，本案例作为一个参考，介绍高科技制造行业MES的一个剪影，包括通用部分和简单的定制部分

android Serializeable与Parcelable 数据对象传递例子源码下载

Discuz_X3.1_SC_UTF8源码，不错，值得 学习。

使用java、phantom、selenium框架实现动态网页爬取，以京东网页为示例。

GBK，unicode utf-8 编码转换工具(Encode Convert Tool between GBK,unicode utf-8,url)

中的图像可以放大和平移，还可以全屏显示。(The image can be enlarged and shifted, and can also be displayed in full screen.)

说明：  Dialog example is selected for the customized list that can dynamically acquire content on the internet. The dialog box shows that a list will be loaded on the Internet first. This example is suitable for the requirement of dynamically obtaining information on the internet. Friends who need it can download and study it.