JavaWb405報錯求大神幫忙！

public class UserServlet extends HttpServlet {

public UserServlet() {
super();
}


public void destroy() {
super.destroy();
}


public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {


doGet(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response, String password)
throws ServletException, IOException {


PrintWriter out = response.getWriter();
String action = request.getParameter("action");
HttpSession session = request.getSession();
if("login".equals(action)){
String userName = request.getParameter("userName");
String userPwd = request.getParameter("userPwd");
User user = new User(userName,userPwd);
int pmsId=User.userLoginService(user);
if(2==pmsId){
user.setPmsId(pmsId);
request.getSession().setAttribute("user", user);
response.sendRedirect("NewsServlet?action=all");
}else{
request.setAttribute("msg", "用戶密碼錯誤！");
request.getRequestDispatcher("adminLogin.jsp").forward(request, response);


}

}else if("loginOut".equals(action)){}
     request.getSession().invalidate();
     response.sendRedirect("adminLogin.jsp");
}

}

package service;
import com.rjgc.entity.User;
public interface UserService {
public boolean userLoginService(User user);
public boolean userRegisterService(User user);
}

package com.rjgc.entity;
public class User {
    private int userId;
    private String userName;
    private String passWord;
    private int pmsId;
    public User() {
super();
}
public User(String userName, String passWord) {
super();
this.userName = userName;
this.passWord = passWord;
}
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public int pmsId() {
return pmsId;

}
public void setPmsId(int pmsId2) {
this.pmsId = pmsId;
}
public static int userLoginService(User user) {
return 0;
}

}