java之UDP(datagramsocket,datagramPacket)实例

import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;import java.net.Socket;import java.net.SocketException;import java.net.UnknownHostException;import org.junit.Test;public class TestUDP {@Testpublic void send() throws Exception{String str = "Hello";DatagramPacket pack = new DatagramPacket(str.getBytes(),str.getBytes().length,InetAddress.getByName("127.0.0.1"),10000);    DatagramSocket scoket = new DatagramSocket();for(int i =0; i< 10;i++){scoket.send(pack);}scoket.close();}@Testpublic void revice() throws Exception{byte[] by = new byte[1024];DatagramPacket pack = new DatagramPacket(by,by.length);DatagramSocket scoket = new DatagramSocket(10000);while(true){scoket.receive(pack);System.out.println(new String(pack.getData()));}}}