java中equals方法空指针异常

用户存在激活码状态也是Y,就把标志设为true
        if(loginuser.getStatus().equals("Y") && loginuser!=null){
            //登录成功
            info.setFlag(true);
        }
        if (!loginuser.getStatus().equals("Y") && loginuser!=null){
            info.setFlag(false);
            info.setErrorMsg("您尚未激活,请激活");
        }

java.lang.NullPointerException
  at cn.itcast.travel.web.servlet.loginservlet.doPost(loginservlet.java:35)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
  at javax.servlet.http.Ht

//5.判断用户是否激活
        if(loginuser != null && !"Y".equals(loginuser.getStatus())){
            //用户尚未激活
            info.setFlag(false);
            info.setErrorMsg("您尚未激活，请激活");
        }
        //6.判断登录成功
        if(loginuser != null && "Y".equals(loginuser.getStatus())){
            req.getSession().setAttribute("user",loginuser);//登录成功标记
            //登录成功
            info.setFlag(true);
        }

public boolean equals(Object anObject) {
    if (this == anObject) {
        return true;
    }
    if (anObject instanceof String) {
        String anotherString = (String)anObject;
        int n = value.length;
        if (n == anotherString.value.length) {
            char v1[] = value;
            char v2[] = anotherString.value;
            int i = 0;
            while (n-- != 0) {
                if (v1[i] != v2[i])
                    return false;
                i++;
            }
            return true;
        }
    }
    return false;
}