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import java.net.DatagramPacket;
import java.net.DatagramSocket;
public class Main {
public static void main(String[] args) throws Exception {
DatagramSocket ds = new DatagramSocket(3000);
byte[] buf = new byte[1024];
DatagramPacket dp = new DatagramPacket(buf, 1024);
ds.receive(dp);
String strRecv = new String(dp.getData(), 0, dp.getLength()) + " from "
+ dp.getAddress().getHostAddress() + ":" + dp.getPort();
System.out.println(strRecv);
ds.close();
}
}
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