File list (Check if you may need any files):
Entity\.classpath
......\.mymetadata
......\.project
......\.settings\com.genuitec.eclipse.persistence.jpa.prefs
......\src\cn\edu\entity\Class.java
......\...\..\...\......\ClassDAO.java
......\...\..\...\......\EntityManagerHelper.java
......\...\..\...\......\IClassDAO.java
......\...\..\...\......\IStudentDAO.java
......\...\..\...\......\Student.java
......\...\..\...\......\StudentDAO.java
......\...\..\...\......\Test.java
......\...\META-INF\persistence.xml
......\WebRoot\index.jsp
......\.......\META-INF\MANIFEST.MF
......\.......\WEB-INF\classes\cn\edu\entity\Class.class
......\.......\.......\.......\..\...\......\ClassDAO.class
......\.......\.......\.......\..\...\......\EntityManagerHelper.class
......\.......\.......\.......\..\...\......\IClassDAO.class
......\.......\.......\.......\..\...\......\IStudentDAO.class
......\.......\.......\.......\..\...\......\Student.class
......\.......\.......\.......\..\...\......\StudentDAO.class
......\.......\.......\.......\..\...\......\Test.class
......\.......\.......\.......\META-INF\persistence.xml
......\.......\.......\lib\mysql-connector-java-5[1].0.8-bin.jar
......\.......\.......\web.xml
test\.classpath
....\.mymetadata
....\.project
....\.settings\com.genuitec.eclipse.persistence.jpa.prefs
....\jpa.reveng.xml
....\src\cn\edu\entity\Book.java
....\...\..\...\......\BookDAO.java
....\...\..\...\......\EntityManagerHelper.java
....\...\..\...\......\IBookDAO.java
....\...\..\...\......\Test.java
....\...\META-INF\persistence.xml
....\WebRoot\index.jsp
....\.......\META-INF\MANIFEST.MF
....\.......\WEB-INF\classes\cn\edu\entity\Book.class
....\.......\.......\.......\..\...\......\BookDAO.class
....\.......\.......\.......\..\...\......\EntityManagerHelper.class
....\.......\.......\.......\..\...\......\IBookDAO.class
....\.......\.......\.......\..\...\......\Test.class
....\.......\.......\.......\META-INF\persistence.xml
....\.......\.......\lib\mysql-connector-java-5[1].0.8-bin.jar
....\.......\.......\web.xml
Entity\WebRoot\WEB-INF\classes\cn\edu\entity
test\WebRoot\WEB-INF\classes\cn\edu\entity
Entity\WebRoot\WEB-INF\classes\cn\edu
test\WebRoot\WEB-INF\classes\cn\edu
Entity\src\cn\edu\entity
......\WebRoot\WEB-INF\classes\cn
......\.......\.......\.......\META-INF
test\src\cn\edu\entity
....\WebRoot\WEB-INF\classes\cn
....\.......\.......\.......\META-INF
Entity\src\cn\edu
......\WebRoot\WEB-INF\classes
......\.......\.......\lib
test\src\cn\edu
....\WebRoot\WEB-INF\classes
....\.......\.......\lib
Entity\src\cn
......\...\META-INF
......\WebRoot\META-INF
......\.......\WEB-INF
test\src\cn
....\...\META-INF
....\WebRoot\META-INF
....\.......\WEB-INF
Entity\.myeclipse
......\.settings
......\src
......\WebRoot
test\.myeclipse
....\.settings
....\src
....\WebRoot
Entity
test