使用以下服务器和客户端结构,编写一个储存考试结果的共享.docVIP

使用以下服务器和客户端结构， 编写一个储存考试结果的共享服务器。 服务器有所有给出科目的学生的考试结果。每个学生有单独ID （学生号）和mark(分数）。 服务器需要可以让老师登录然后输入每个学生的分数。服务器管理所有的老师的登录名和密码和学生ID。 服务器需要允许多个老师同时登录。 import java.io.*; import java.net.*; class …Server { final static int portSqrt = 1234; // any number 1024 public static void main(String[] args) { Screen.message(Server running ...); try { ServerSocket servesock = new ServerSocket(portSqrt); // for service requests on port portSqrt while (true) { // wait for a service request on port portSqrt Socket socket = servesock.accept(); // start thread to service request (new Thread(new ThreadName(socket))).start(); } } catch (IOException e) {} } } import java.io.*; import java.net.*; class ..Client { private final static int port = 1234; public static void main(String[] args) { try { Socket socket; socket = new Socket(InetAddress.getLocalHost(),portSqrt); … in = new … (socket.getInputStream()); … out = new … (socket.getOutputStream()); // use out to send data // use in to get reply // process reply socket.close(); } catch (IOException e) {System.out.println(e);} } } ------------------------------------------------------------------------------------------------------- Using the client server architecture developed in the lecture course, write a server that provides access to a shared collection of examination results. The server holds the results for all students in a given course. Each student has an id number and a mark. When a student logs on they enter their id number and the server returns the mark for the examination. It should be possible for a lecturer to log on and enter marks for students. The server maintains a list of lecturers and their passwords and also a list of student id numbers. It is important to remember that multiple lecturers may enter results at the same time.