Interacting with Networks and Databases - Beginning Java 7 - page 820

import java.io.IOException;

import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;

class MCClient
{

final static int PORT = 10000;
public static void main(String[] args)
{

try (MulticastSocket mcs = new MulticastSocket(PORT))
{

InetAddress group = InetAd-

dress.getByName("231.0.0.1");
mcs.joinGroup(group);
for (int i = 0; i < 10; i++)
{

byte[] buffer = new byte[256];
DatagramPacket dgp = new DatagramPacket(buffer,
buffer.length);
mcs.receive(dgp);
byte[] buffer2 = new byte[dgp.getLength()];
System.arraycopy(dgp.getData(), 0, buffer2, 0,
dgp.getLength());
System.out.println(new String(buffer2));

}
mcs.leaveGroup(group);

}
catch (IOException ioe)
{

System.err.println("i/o error:

"+ioe.getMessage());
}