编写一个完整的java程序,该程序由2个或2个以上的class构成

1）编写一个完整的java程序，该程序由2个或2个以上的class构成，在代码中充分体现面向对象特性（例如继承、方法重载、类的组合等等）。
（2）该程序实现图形用户界面的交互，包含动作响应事件。

public class TeacherController extends BaseManageController { private UserInfoManager userInfoManager; private ClassInfoManager classInfoManager; private BatchInfoManager batchInfoManager;
public void setUserInfoManager(UserInfoManager userInfoManager) { this.userInfoManager = userInfoManager; }
public void setClassInfoManager(ClassInfoManager classInfoManager) { this.classInfoManager = classInfoManager; }
public void setBatchInfoManager(BatchInfoManager batchInfoManager) { this.batchInfoManager = batchInfoManager; }
/** * 前往修改密码页面 */ public ModelAndView toUpdatePassword(HttpServletRequest request, HttpServletResponse response) { ModelAndView mav = CustomDispatchServlet.getModeAndView(); mav.setViewName("/teacher/updatePassword.jsp"); Integer teacherId = (Integer) GetSessionAttribute.getSessionAttribute(request, "teacherId"); UserInfo teacher = (UserInfo) this.userInfoManager.get(teacherId); request.setAttribute("userId", teacher.getUserId()); request.setAttribute("loginName", teacher.getLoginName()); request.setAttribute("loginPass", teacher.getLoginPass()); request.setAttribute("userName", teacher.getUserName()); return mav; }
/** * 修改密码 */ public ModelAndView updatePassword(HttpServletRequest request, HttpServletResponse response) throws Exception { ModelAndView mav = CustomDispatchServlet.getModeAndView(); mav.setViewName("/teacher/updatePassword.jsp"); String userId = request.getParameter("userId"); String loginName = request.getParameter("loginName"); String loginPass = request.getParameter("loginPass"); String userName = request.getParameter("userName"); //取得待修改用户 UserInfo teacher = this.userInfoManager.get(Integer.valueOf(userId)); //判断用户名是否已存在 UserInfo checkTeacher = this.userInfoManager.getUserInfoByLoginName(loginName); if(checkTeacher != null){ //添入的用户名存在，且不是自己 if(!loginName.equals(teacher.getLoginName())){ saveMessage(request, "用户名"+loginName+"已存在，请重新输入"); request.setAttribute("userId", userId); request.setAttribute("loginName", teacher.getLoginName()); request.setAttribute("loginPass", teacher.getLoginPass()); request.setAttribute("userName", teacher.getUserName()); return mav; } } //如果用户名不存在，则修改 teacher.setLoginName(loginName); teacher.setLoginPass(loginPass); teacher.setUserName(userName); this.userInfoManager.save(teacher); saveMessage(request, "修改成功"); request.setAttribute("userId", userId); request.setAttribute("loginName", loginName); request.setAttribute("loginPass", loginPass); request.setAttribute("userName", userName); return mav; }

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