Client/sever Mode of communication--java

c/S communication based on UDP mode This is the client side:

Import Java.net.*;import java.io.*;p ublic class udpclient{public static void Main (String args[]) {Datagramsocket socket = Null;datagrampacket packet = null;inetaddress address = null; String s = "Send the data, please!"; byte buf[] = new Byte[256];buf = S.getbytes (); byte ip[] = {(byte) 127, (byte) 0, (byte) 0, (byte) 1};try{address = INETADDRESS.G Etbyaddress (IP), socket = new Datagramsocket ();p acket = new Datagrampacket (buf,buf.length,address,1080); Socket.send ( packet); Thread.Sleep (+);p acket = new Datagrampacket (buf,buf.length); socket.receive (packet); s = new String (Packet.getdata ( )); System.out.println ("Received data is:" +s); catch (Exception e) {System.out.println (e.tostring ());} Socket.close ();}}

This is the sever side:

Import java.net.*;import java.io.*;import java.util.*;p ublic class udpsever{public static void Main (String args[]) { Datagramsocket Socket1=null;datagrampacket Packet1=null; String s1;byte buf1[]= new byte[256];inetaddress Address1 = null;int port1;date date1;try{socket1 = new Datagramsocket (108 0);p Acket1 = new Datagrampacket (buf1,buf1.length); socket1.receive (PACKET1); S1=new String (Packet1.getdata ()); System.out.println ("Received request:" +s1);p Ort1 = Packet1.getport (); address1= packet1.getaddress ();d ate1 = new Date ( ); s1 = date1.tostring (); buf1= s1.getbytes ();p acket1= new Datagrampacket (BUF1,BUF1.LENGTH,ADDRESS1,PORT1); Socket1.send (PACKET1); Thread.Sleep (2000);} catch (Exception e) {System.out.println (e.tostring ());} Socket1.close ();}}

If you change this IP address. You can do simple network communication. Network programming just contact, slowly learn.

Client/sever Mode of communication--java