servlet do with the multi-table makes a simple change the investigation, the database is used sql2

Packet : 67506275hobby_servlet.rar filelist
Hobby_servlet
Hobby_servlet\.project
Hobby_servlet\src
Hobby_servlet\src\persistence
Hobby_servlet\src\persistence\DataBaseConnection.java
Hobby_servlet\src\util
Hobby_servlet\src\util\Tochinese.java
Hobby_servlet\src\webtier
Hobby_servlet\src\webtier\Servlet.java
Hobby_servlet\src\bean
Hobby_servlet\src\bean\Bean.java
Hobby_servlet\WebRoot
Hobby_servlet\WebRoot\WEB-INF
Hobby_servlet\WebRoot\WEB-INF\lib
Hobby_servlet\WebRoot\WEB-INF\lib\servlet-api.jar
Hobby_servlet\WebRoot\WEB-INF\classes
Hobby_servlet\WebRoot\WEB-INF\classes\webtier
Hobby_servlet\WebRoot\WEB-INF\classes\webtier\Servlet.class
Hobby_servlet\WebRoot\WEB-INF\classes\util
Hobby_servlet\WebRoot\WEB-INF\classes\util\Tochinese.class
Hobby_servlet\WebRoot\WEB-INF\classes\persistence
Hobby_servlet\WebRoot\WEB-INF\classes\persistence\DataBaseConnection.class
Hobby_servlet\WebRoot\WEB-INF\classes\bean
Hobby_servlet\WebRoot\WEB-INF\classes\bean\Bean.class
Hobby_servlet\WebRoot\WEB-INF\web.xml
Hobby_servlet\WebRoot\META-INF
Hobby_servlet\WebRoot\META-INF\MANIFEST.MF
Hobby_servlet\WebRoot\login.jsp
Hobby_servlet\WebRoot\hobby.jsp
Hobby_servlet\WebRoot\query.jsp
Hobby_servlet\WebRoot\queryone.jsp
Hobby_servlet\.myeclipse
Hobby_servlet\.mymetadata
Hobby_servlet\.classpath

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