Java 第三次作业

import java.io.*;
import java.net.*;
import java.applet.Applet;
public class ChatServer {
<span style="white-space:pre">	</span>public static void main(String args[]){
<span style="white-space:pre">		</span>try{
<span style="white-space:pre">			</span>ServerSocket server=null;
<span style="white-space:pre">		</span>try{
<span style="white-space:pre">			</span>server=new ServerSocket(4000);
<span style="white-space:pre">			</span>System.out.println("准备好了，退出输入bye");
<span style="white-space:pre">		</span>}catch(Exception e){
<span style="white-space:pre">			</span>System.out.println("can not listen to:"+e);
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>Socket socket=null;
<span style="white-space:pre">		</span>try{
<span style="white-space:pre">			</span>socket=server.accept();
<span style="white-space:pre">		</span>}catch(Exception e){
<span style="white-space:pre">			</span>System.out.println("Error."+e);
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>String line;
<span style="white-space:pre">		</span>BufferedReader is=new BufferedReader(new InputStreamReader(socket.getInputStream()));
<span style="white-space:pre">		</span>PrintWriter os=new PrintWriter(socket.getOutputStream());
<span style="white-space:pre">		</span>BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));
<span style="white-space:pre">		</span>System.out.println("Client:"+is.readLine());
<span style="white-space:pre">		</span>line=sin.readLine();
<span style="white-space:pre">		</span>while(! line.equals("bye")){
<span style="white-space:pre">			</span>os.println(line);
<span style="white-space:pre">			</span>os.flush();
<span style="white-space:pre">			</span>System.out.println("Server:"+line);
<span style="white-space:pre">			</span>System.out.println("Client:"+is.readLine());
<span style="white-space:pre">			</span>line=sin.readLine();
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>os.close();
<span style="white-space:pre">		</span>is.close();
<span style="white-space:pre">		</span>socket.close();
<span style="white-space:pre">		</span>server.close();
<span style="white-space:pre">	</span>}catch(Exception e){
<span style="white-space:pre">		</span>System.out.println("Error:"+e);
<span style="white-space:pre">		</span>}
<span style="white-space:pre">	</span>}
}

import java.io.*;
import java.net.*;
public class ChatClient {
public static void main(String args[]){
<span style="white-space:pre">	</span>try{
<span style="white-space:pre">		</span>Socket socket=new Socket("127.0.0.1",4000);
<span style="white-space:pre">		</span>System.out.println("输入你要说的话，如果要退出输入bye");
<span style="white-space:pre">		</span>BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));
<span style="white-space:pre">		</span>PrintWriter os=new PrintWriter(socket.getOutputStream());
<span style="white-space:pre">		</span>BufferedReader is=new BufferedReader(new InputStreamReader(socket.getInputStream()));
<span style="white-space:pre">		</span>String readline;
<span style="white-space:pre">		</span>readline =sin.readLine();
<span style="white-space:pre">		</span>while(! readline.equals("bye")){
<span style="white-space:pre">			</span>os.println(readline);
<span style="white-space:pre">			</span>os.flush();
<span style="white-space:pre">			</span>System.out.println("Client:"+readline);
<span style="white-space:pre">			</span>System.out.println("Server:"+is.readLine());
<span style="white-space:pre">			</span>readline=sin.readLine();
<span style="white-space:pre">		</span>}
<span style="white-space:pre">		</span>os.close();
<span style="white-space:pre">		</span>is.close();
<span style="white-space:pre">		</span>socket.close();
<span style="white-space:pre">	</span>}catch(Exception e){
<span style="white-space:pre">		</span>System.out.println("Error"+e);
<span style="white-space:pre">	</span>}
}
}