[JAVA100 example]043, a pair of simple servers and clients

Import java.net.*;


import java.io.*;


/**


* <p>title: Simple Server service side </p>


* <p>description: This is a simple server-side program </p>


* <p>copyright:copyright (c) 2003</p>


* <p>Filename:SampleServer.java</p>


* @version 1.0


*/


public class sampleserver{


public static void Main (string[] arges) {


try{


int port = 8888;


//Use 8888 port to create a serversocket


ServerSocket mysocket = new ServerSocket (port);


//Waiting to listen for a client connection


Socket SK = mysocket.accept ();


//Input Cache


BufferedReader in = new BufferedReader (


New InputStreamReader (Sk.getinputstream ()));


//Output cache


PrintWriter out = new PrintWriter (


New BufferedWriter (


New OutputStreamWriter (


Sk.getoutputstream ()), true);


//Print incoming information sent by the client


System.out.println ("Client Information:" +in.readline ());


//Back to client information


out.println ("Hello, I am the server.") I use the port number: "+port";


}catch (Exception e) {


System.out.println (e);


　　}


　}


}


import java.io.*;


import java.net.*;


/**


* <p>title: Simple Server client </p>


* <p>description: This program is a simple client, used to connect with the server </p>


* <p>copyright:copyright (c) 2003</p>


* <p>Filename:SampleClient.java</p>


* @version 1.0


*/


public class sampleclient{


public static void Main (string[] arges) {


try{


//Get an IP. Null indicates native


inetaddress addr = Inetaddress.getbyname (null);


//Open port 8888, establish a connection with the server


Socket SK = new socket (addr, 8888);


//Cache input


BufferedReader in = new BufferedReader (


New InputStreamReader (Sk.getinputstream ()));


//Cache output


PrintWriter out = new PrintWriter (


New BufferedWriter (


New OutputStreamWriter (


Sk.getoutputstream ()), true);


//Send information to the server


out.println ("Hello!)" ");


//Receive server information


System.out.println (In.readline ());


}catch (Exception e) {


System.out.println (e);


　　}


　}


}