Java Socket Emulation Chat Program



According to TCP/IP protocol, the network chat via socket is divided into server side and client, which is the reference program.

Server-side programs:

Package Com.michael.contact;import Java.io.bufferedreader;import Java.io.ioexception;import java.io.InputStream; Import Java.io.inputstreamreader;import java.io.outputstream;import java.net.serversocket;import java.net.Socket; public class Server {public static void main (string args[]) throws IOException {string reces = Null;int len; Socket socket = Null;outputstream OutputStream = Null;inputstream InputStream = null;byte[] Rece = new Byte[1000];try {Ser Versocket ServerSocket = new ServerSocket (8888); The socket for the server, Port 8888while (true) {socket = serversocket.accept (); inputstream = Socket.getinputstream ();// Get input Stream outputstream = Socket.getoutputstream ();//Get output stream len = Inputstream.read (rece);//Accept Client message if (len! = 0) reces = new Strin G (rece, 0, Len); System.out.println (reces); BufferedReader bufferreader = new BufferedReader (new InputStreamReader (system.in)); Outputstream.write ("Server ...." + Bufferreader.readline ()). GetBytes ());//Return to the client Welcome message}} catch (Exception e) {e.printstacktrace ();} finally {inputsTream.close (); Outputstream.close (); Socket.close ();//Remember to close these inputs, output streams, and sockets}}} 

Client program:

Package Com.michael.contact;import Java.io.BufferedReader;  Import java.io.IOException;  Import Java.io.InputStream;  Import Java.io.InputStreamReader;  Import Java.io.OutputStream;  Import java.net.InetAddress;  Import Java.net.Socket; public class Client {public static void main (string[] args) throws IOException {String serveripaddress = "          127.0.0.1 ";//each other's IP string words =" Hello ";//The other's words string temp = null;          byte[] Serversay = new byte[1000];//read <1kb inputstreamreader read = null;          int len = 0;          Socket s = null;          OutputStream outputstream = null;          InputStream inputstream = null;          Get the IP System.out.println you gave him ("Please enter each other's IP (default to yourself):");          Read = new InputStreamReader (system.in);              try {temp = new BufferedReader (read). ReadLine ();          if (!temp.equals ("")) serveripaddress = temp;        } catch (IOException E1) {}  Get you each of his message System.out.println ("Please enter what you want to say to him (her)----Enter quit!!:");          Read = new InputStreamReader (system.in);                  while (true) {try {temp = "Hello";                  temp = new BufferedReader (read). ReadLine ();                  words = temp;                  if (Words.equals ("Quit")) break;                  temp = "Client ..." + words; Initiating communication s = new socket (Inetaddress.getbyname (serveripaddress), 8888);//Socket IP address and port number out                  Putstream = S.getoutputstream ();                  InputStream = S.getinputstream ();                  Outputstream.write (Temp.getbytes ("GBK"));//Send message to Server Len = Inputstream.read (Serversay);//Accept Server message              System.out.println (New String (Serversay, 0, Len));//Client console displays the information returned by the server} catch (Exception e) {                  } finally {inputstream.close ();      Outputstream.close ();            S.close ();//Remember to close these inputs, output streams and sockets}}//end While}}   

Java Socket Emulation Chat Program