while(true)
                {
                out.println("Username:");
                String Nmsg = in.readLine();
                    if(Nmsg.equals(users[i].getName()))
                    {
                        break;
                    }
                    out.println("Not Registered");
                    i++;
                }
                out.println("Accepted!");
                int n = 0;

                while (n<4)
                {
                   out.println("Password:");
                   String Pmsg = in.readLine();
                   if(Pmsg.equals(users[i].getPassword()))
                   {
                       break;
                   }
                   out.println("Wrong" + (3-n) + "attempts left");
                   n++;
                }