Jxnet: Sending Packet

package com.ardikars.test.jxnet;

import java.nio.ByteBuffer;

import com.ardikars.jxnet.Jxnet;
import com.ardikars.jxnet.Pcap;

public class SendingPacket {
 
 public static void main(String[] args) {
  
  StringBuilder errbuf = new StringBuilder();
  String source = Jxnet.PcapLookupdev(errbuf);
  if(source == null) {
   System.err.println(errbuf.toString());
   return;
  }
  Pcap pcap = Jxnet.PcapOpenLive(source, 65535, 1, 2000, errbuf);
  if(pcap == null) {
   System.err.println(errbuf.toString());
   return;
  }
  
  ByteBuffer bb = ByteBuffer.allocateDirect(14);
  bb.put(new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff});
  bb.put(new byte[] {(byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef, (byte) 0xc0, (byte) 0xfe});
  bb.put((byte) 0x0806); // ARP
  if(Jxnet.PcapSendPacket(pcap, bb, bb.limit()) == 0) {
   System.out.println("OK");
  } else {
   System.err.println(Jxnet.PcapGetErr(pcap));
  }
  Jxnet.PcapClose(pcap);
  
 }
}