Student management system, a simple tried jpa+ jsp+ servlet

StudentManager\.classpath
..............\.mymetadata
..............\.project
..............\.settings\com.genuitec.eclipse.persistence.jpa.prefs
..............\src\com\student\dao\ClassDao.java
..............\...\...\.......\...\CourseDao.java
..............\...\...\.......\...\impl\IClassDao.java
..............\...\...\.......\...\....\ICourseDao.java
..............\...\...\.......\...\....\IScoreDao.java
..............\...\...\.......\...\....\IStudentDao.java
..............\...\...\.......\...\ScoreDao.java
..............\...\...\.......\...\StudentDao.java
..............\...\...\.......\entity\ClassEO.java
..............\...\...\.......\......\CourseEO.java
..............\...\...\.......\......\ScoreEO.java
..............\...\...\.......\......\StudentEO.java
..............\...\...\.......\.xception\StudentException.java
..............\...\...\.......\jdbc\conn\JdbcHelper.java
..............\...\...\.......\loader\PropertiesLoader.java
..............\...\...\.......\servlet\AjaxServlet.java
..............\...\...\.......\.......\ClassServlet.java
..............\...\...\.......\.......\CourseServlet.java
..............\...\...\.......\.......\ScoreServlet.java
..............\...\...\.......\.......\StudentServlet.java
..............\...\...\.......\util\CharacterFilter.java
..............\...\...\.......\....\DateUitl.java
..............\...\...\.......\....\EntityManagerHelper.java
..............\...\...\.......\....\Pageation.java
..............\...\META-INF\persistence.xml
..............\...\student.properties
..............\WebRoot\addClass.jsp
..............\.......\addClassSuccess.jsp
..............\.......\addCourse.jsp
..............\.......\addCourseSuccess.jsp
..............\.......\addScore.jsp
..............\.......\addScoreSuccess.jsp
..............\.......\addStudent.jsp
..............\.......\addStudentCourse.jsp
..............\.......\addStudentSuccess.jsp
..............\.......\error.jsp
..............\.......\footer.jsp
..............\.......\head.jsp
..............\.......\img\error0.jpg
..............\.......\listClass.jsp
..............\.......\listCourse.jsp
..............\.......\listStudent.jsp
..............\.......\listStudentScore.jsp
..............\.......\META-INF\MANIFEST.MF
..............\.......\QueryScore.jsp
..............\.......\Untitled0.sql
..............\.......\WEB-INF\classes\com\student\dao\ClassDao.class
..............\.......\.......\.......\...\.......\...\CourseDao.class
..............\.......\.......\.......\...\.......\...\impl\IClassDao.class
..............\.......\.......\.......\...\.......\...\....\ICourseDao.class
..............\.......\.......\.......\...\.......\...\....\IScoreDao.class
..............\.......\.......\.......\...\.......\...\....\IStudentDao.class
..............\.......\.......\.......\...\.......\...\ScoreDao.class
..............\.......\.......\.......\...\.......\...\StudentDao.class
..............\.......\.......\.......\...\.......\entity\ClassEO.class
..............\.......\.......\.......\...\.......\......\CourseEO.class
..............\.......\.......\.......\...\.......\......\ScoreEO.class
..............\.......\.......\.......\...\.......\......\StudentEO.class
..............\.......\.......\.......\...\.......\.xception\StudentException.class
..............\.......\.......\.......\...\.......\jdbc\conn\JdbcHelper.class
..............\.......\.......\.......\...\.......\loader\PropertiesLoader.class
..............\.......\.......\.......\...\.......\servlet\AjaxServlet.class
..............\.......\.......\.......\...\.......\.......\ClassServlet.class
..............\.......\.......\.......\...\.......\.......\CourseServlet.class
..............\.......\.......\.......\...\.......\.......\ScoreServlet.class
..............\.......\.......\.......\...\.......\.......\StudentServlet.class
..............\.......\.......\.......\...\.......\util\CharacterFilter.class
..............\.......\.......\.......\...\.......\....\DateUitl.class
..............\.......\.......\.......\...\.......\....\EntityManagerHelper.class
..............\.......\....

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