some code of java development tools book , I hope there is some help for junior developers

chapter17
.........\DemoJavaBeanApplication
.........\.......................\build
.........\.......................\.....\generated
.........\.......................\.....\.........\classes
.........\.......................\.....\.........\.......\org
.........\.......................\.....\.........\.......\...\apache
.........\.......................\.....\.........\.......\...\......\jsp
.........\.......................\.....\.........\.......\...\......\...\showmessage_jsp.class
.........\.......................\.....\.........\.......\...\......\...\usecart_jsp.class
.........\.......................\.....\.........\src
.........\.......................\.....\.........\...\org
.........\.......................\.....\.........\...\...\apache
.........\.......................\.....\.........\...\...\......\jsp
.........\.......................\.....\.........\...\...\......\...\showmessage_jsp.class.smap
.........\.......................\.....\.........\...\...\......\...\showmessage_jsp.java
.........\.......................\.....\.........\...\...\......\...\usecart_jsp.class.smap
.........\.......................\.....\.........\...\...\......\...\usecart_jsp.java
.........\.......................\.....\web
.........\.......................\.....\...\createmessage.html
.........\.......................\.....\...\createuserinfo.html
.........\.......................\.....\...\dealuserinfo.jsp
.........\.......................\.....\...\META-INF
.........\.......................\.....\...\........\context.xml
.........\.......................\.....\...\........\MANIFEST.MF
.........\.......................\.....\...\showmessage.jsp
.........\.......................\.....\...\usecart.jsp
.........\.......................\.....\...\WEB-INF
.........\.......................\.....\...\.......\classes
.........\.......................\.....\...\.......\.......\com
.........\.......................\.....\...\.......\.......\...\netbeans
.........\.......................\.....\...\.......\.......\...\........\web
.........\.......................\.....\...\.......\.......\...\........\...\Cart.class
.........\.......................\.....\...\.......\.......\...\........\...\MessageBean.class
.........\.......................\.....\...\.......\.......\...\........\...\ShowCartServlet.class
.........\.......................\.....\...\.......\.......\...\........\...\UseMessageBean.class
.........\.......................\.....\...\.......\.......\...\........\...\UserInfo.class
.........\.......................\.....\...\.......\.......\...\........\...\UserRegist.class
.........\.......................\.....\...\.......\web.xml
.........\.......................\build.xml
.........\.......................\conf
.........\.......................\....\MANIFEST.MF
.........\.......................\dist
.........\.......................\....\DemoJavaBeanApplication.war
.........\.......................\nbproject
.........\.......................\.........\build-impl.xml
.........\.......................\.........\genfiles.properties
.........\.......................\.........\private
.........\.......................\.........\.......\private.properties
.........\.......................\.........\.......\private.xml
.........\.......................\.........\project.properties
.........\.......................\.........\project.xml
.........\.......................\src
.........\.......................\...\com
.........\.......................\...\...\netbeans
.........\.......................\...\...\........\web
.........\.......................\...\...\........\...\Cart.java
.........\.......................\...\...\........\...\MessageBean.java
.........\.......................\...\...\........\...\ShowCartServlet.java
.........\.......................\...\...\........\...\UseMessageBean.java
.........\.......................\...\...\........\...\UserInfo.java
.........\.......................\...\...\........\...\UserRegist.java
.........\.......................\test
.........\.......................\web
.........\.......

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