Introduction
DatagramSocket represents a socket for sending and receiving datagram packets.
A datagram socket is the sending or receiving point for a packet delivery service. Each packet sent or received on a datagram socket is individually addressed and routed. Multiple packets sent from one machine to another may be routed differently, and may arrive in any order.
The example below shows how a Multicast can be created using the DatagramSocket class.
byte[] outbuf = new byte[1024]; int port = 1234; try { DatagramSocket socket = new DatagramSocket(); InetAddress groupAddr = InetAddress.getByName("228.1.2.3"); DatagramPacket packet = new DatagramPacket(outbuf, outbuf.length, groupAddr, port); socket.send(packet); } catch (SocketException e) { } catch (IOException e) { }