Java Socket编程，读服务器几个字符，再写入本地显示。？

Server端程序

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;


public class Server {
    
    private ServerSocket ss;
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;
    public Server(){
        try {
            ss=new ServerSocket(10000);
            while(true){
                socket=ss.accept();
                String RemoteIp=socket.getInetAddress().getHostAddress();
                String RemotePort=":"+socket.getLocalPort();
                System.out.println("A client come in!IP: "+RemoteIp+RemotePort);
                in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
                String line=in.readLine();
                System.out.println("Client send is:"+line);
                out=new PrintWriter(socket.getOutputStream(),true);
                out.println("Your Message Received!");
                out.close();
                in.close();
                socket.close();
                                
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            out.print("wrong");
        }
    }
    public static void main(String[] args){
        new Server();
    }
    
    

}

Client端程序：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;


public class Client {
        Socket socket;
        BufferedReader in;
        PrintWriter out;
        public Client(){
            System.out.println("try to Connect to 127.0.0.1:10000");
            try {
                socket=new Socket("127.0.0.1",10000);
                System.out.println("The Server Connected!");
                System.out.println("Please enter some character:");
                BufferedReader line=new BufferedReader(new InputStreamReader(System.in));
                out=new PrintWriter(socket.getOutputStream(),true);
                out.println(line.readLine());////
                in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
                System.out.println(in.readLine());
                out.close();
                in.close();
                socket.close();
                
            } catch (UnknownHostException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                out.println("wrong");
            }
            
        }
        public static void main(String[] args){
            new Client();
            
        }
}