demo/a/practicle/clientu.java

import java.io.*;
import java.net.*;

public class clientu{
	public static void main(String arg[])throws IOException
	{
	try
	{
		DatagramSocket clientsock=new DatagramSocket();	
		byte[] send;
		byte[] recv = new byte[1024];
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String str=br.readLine();
		String rec;

		InetAddress ip=InetAddress.getByName("localhost"); 
		send=str.getBytes();	
		DatagramPacket sendpacket= new DatagramPacket(send,send.length,ip,9090);
		clientsock.send(sendpacket);
		DatagramPacket recvpacket=new DatagramPacket(recv,recv.length);
		clientsock.receive(recvpacket);
		rec=new String(recvpacket.getData(),0,recvpacket.getLength());
		System.out.println(""+rec);
		
	}
	catch(Exception e)
	{
		System.out.println(""+e);
	}
	}
}