java第三次作业：Java与socket实现

//客户端程序1：ChatClient.java<pre name="code" class="java">import java.io.*;
import java.net.*;
import java.applet.Applet;

public class ChatServer {
public static void main(String[]args){
try{
ServerSocket server = null;
try{
server = new ServerSocket(4000);
System.out.println("准备好了。退出输入bye");

}catch(Exception e){
System.out.println("can not listen to" + e);
}
Socket socket = null;
try{
socket = server.accept();

}catch(Exception e){
System.out.println("Error." + e);
}
String line;
BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter os = new PrintWriter(socket.getOutputStream());
BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Client:" + is.readLine());
line = sin.readLine();
while(! line.equals("bye")){
os.println(line);
os.flush();
System.out.println("Server:" + line);
System.out.println("Client:" + is.readLine());
line = sin.readLine();
}
os.close();
is.close();
socket.close();
server.close();

}catch(Exception e){
System.out.println("Error:" + e);
}
}
}

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

}

//实现结果就是无论在那个程序所编译出来的对话框，你在里面输入你要说的话，就会在另外一个对话框显示出来。此两个小程序实现的是简单对话交流。

//该对话框的结束时输入bye，即会话结束。