three-tier architecture to achieve java shopping cart instance, we can refer to

shoppingcart_2
..............\.classpath
..............\.myeclipse
..............\.mymetadata
..............\.project
..............\.settings
..............\.........\.jsdtscope
..............\.........\org.eclipse.core.resources.prefs
..............\.........\org.eclipse.jdt.core.prefs
..............\.........\org.eclipse.wst.jsdt.ui.superType.container
..............\.........\org.eclipse.wst.jsdt.ui.superType.name
..............\src
..............\...\bean
..............\...\....\Cart.java
..............\...\....\CartItem.java
..............\...\dao
..............\...\...\ComputerDAO.java
..............\...\entity
..............\...\......\Computer.java
..............\...\test
..............\...\....\TestDAO.java
..............\...\util
..............\...\....\DBUtil.java
..............\...\web
..............\...\...\ActionServlet.java
..............\WebRoot
..............\.......\cart.jsp
..............\.......\computer_list.jsp
..............\.......\css
..............\.......\...\d010
..............\.......\...\....\bg.gif
..............\.......\...\....\bullet_green.gif
..............\.......\...\....\bullet_grey.gif
..............\.......\...\....\button.gif
..............\.......\...\....\content_bg.gif
..............\.......\...\....\CVS
..............\.......\...\....\...\Entries
..............\.......\...\....\...\Repository
..............\.......\...\....\...\Root
..............\.......\...\....\footer.gif
..............\.......\...\....\footer_bg.gif
..............\.......\...\....\style.css
..............\.......\...\....\tableheader-bg-grey.gif
..............\.......\...\....\tableheader-bg.gif
..............\.......\...\....\top_left.gif
..............\.......\...\main
..............\.......\...\....\bg_button.gif
..............\.......\...\....\bg_header.gif
..............\.......\...\....\bg_input.gif
..............\.......\...\....\bg_list.gif
..............\.......\...\....\bg_menu.gif
..............\.......\...\....\bg_menu2.gif
..............\.......\...\....\color.jpg
..............\.......\...\....\CVS
..............\.......\...\....\...\Entries
..............\.......\...\....\...\Repository
..............\.......\...\....\...\Root
..............\.......\...\....\getcolor.htm
..............\.......\...\....\login.css
..............\.......\...\....\login_header.gif
..............\.......\...\....\logo.gif
..............\.......\...\....\menu_add.gif
..............\.......\...\....\menu_reduce.gif
..............\.......\...\....\process.gif
..............\.......\...\....\processbg.gif
..............\.......\...\....\style.css
..............\.......\...\....\watermarkpreview.jpg
..............\.......\...\....\zoomin.gif
..............\.......\...\....\zoomout.gif
..............\.......\db.jsp
..............\.......\img
..............\.......\...\CVS
..............\.......\...\...\Entries
..............\.......\...\...\Repository
..............\.......\...\...\Root
..............\.......\...\d007
..............\.......\...\....\CVS
..............\.......\...\....\...\Entries
..............\.......\...\....\...\Repository
..............\.......\...\....\...\Root
..............\.......\...\....\x200.jpg
..............\.......\...\....\x500.jpg
..............\.......\...\....\x600.jpg
..............\.......\index.jsp
..............\.......\META-INF
..............\.......\........\MANIFEST.MF
..............\.......\WEB-INF
..............\.......\.......\classes
..............\.......\.......\.......\bean
..............\.......\.......\.......\....\Cart.class
..............\.......\.......\.......\....\CartItem.class
..............\.......\.......\.......\dao
..............\.......\.......\.......\...\ComputerDAO.class
..............\.......\.......\.......\entity
..............\.......\.......\.......\......\Computer.class
..............\.......\.......\.......\test
..............\.......\.......\.......\....\TestDAO.class
..............\.......\.......\.......\util
..............\.......\.......\.......\....\DBUtil.class
..............\.......\.......\.......\web

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