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

public?class?MulticastClient{
	String?groupHost=“232.0.0.1“;?//組播組虛擬IP
	int?port=5678;?//端口

	public?MulticastClient（）{
		try{
			byte[]?message?=?“HelloThis?is?Client.“.getBytes（）;?//發送信息
??????		InetAddress?inetAddress?=?InetAddress.getByName（groupHost）;?//組播地址
??????		DatagramPacket?datagramPacket=?new?DatagramPacket（message?message.length?inetAddress?port）;?//發送數據報
??????		DatagramSocket?socket?=?new?DatagramSocket（）;?//DatagramSocket實例
??????		socket.send（datagramPacket）;?//發送數據
??????		socket.close（）;?//關閉端口
????	}
????	catch?（Exception?exception）?{
??????		exception.printStackTrace（）;??//輸出錯誤信息
????	}?
	}
	
??	public?static?void?main（String[]?args）{
		new?MulticastClient（）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????889??2004-05-29?16:01??MulticastClient.class
?????文件?????????798??2004-06-01?02:20??MulticastClient.java
?????文件?????????750??2004-05-27?00:37??MulticastServer
?????文件????????1033??2004-05-29?16:01??MulticastServer.class
?????文件?????????929??2004-06-01?02:26??MulticastServer.java