Hi !!! I built a program for msg transfer in java using udp.

//udp server
import java.net.*;
import java.io.*;
class Server
{
public static void main(String args[])throws IOException
{
byte b[]=new byte[1024];
DatagramSocket ds=new DatagramSocket(5001);
DatagramPacket dp=new DatagramPacket(b,1024);

//System.out.println("receiving");
ds.receive(dp);
String str=new String(dp.getData(),0,dp.getLength());
//receive file name
System.out.println("Received file "+str);
FileReader fr=new FileReader(str);
BufferedReader br1=new BufferedReader(fr);
while((str=br1.readLine())!=NULL)
{
b=str.getBytes();
ds.send(new DatagramPacket(b,b.length,InetAddreass.getLocalHost(),5000));
}
ds.close();
}
}



//udp client

import java.net.*;
import java.io.*;
class Client
{
public static void main(String args[])throws IOException
{
byte b[]=new byte[1024];
DatagramSocket ds=new DatagramSocket(5000);
DatagramPacket dp=new DatagramPacket(b,1024);
DataInputStream dis=new DataInputStream(System.in);
System.out.println("Enter file name\n");
String str1;
str1=dis.readLine();
b=str1.getBytes();
ds.send(new DatagramPacket(b,b.length,InetAddress.getLocalHost(),5001));
System.out.println("Contents of file:"+str1+"\n");
while(str1!=NULL)
{
ds.receive(dp);
str1=new String(dp.getData(),0,dp.getLength());//receive file contents
System.out.println(str1);
}
ds.close();
}
}

@ashu_305 congratulation on your program, just shame you are about 4 year too late...

PS: Next step in your messaging service would be perhaps some GUI and use of threads. Good luck

How to establish the connection between two hosts through socket programming(TCP) in java.

hi

Iwant simple code chat in java