I don't have any problem to use PCap library. I just need the library
in jars and not as setup installer in order to add these jars to my
collection of already used jars.

If someone is looking for this solution it is possible to do this with
JNetStream and SNMP4J libraries in a pretty easy way.

The algorithm is as follows:
- Parse pcap file stream with JNetStream decoder and run over all
packets in pcap file

Decoder decoder = new Decoder(pcap_filename);
Packet packet = null;
byte[] buff = null;

while ((packet = decoder.nextPacket()) != null)
{
   buff = packet.getDataValue();

   // get timestamp
   TimePrimitive timePrimitive =
(TimePrimitive)packet.getProperty("timestamp");
   Timestamp sqlTimestamp = (Timestamp)timePrimitive.getValue();
   timestamp = sqlTimestamp.getTime();

   // get source IP address
   Field saddrField = packet.getHeader("IPv4").getField("saddr");
   com.voytechs.jnetstream.primitive.address.IpAddress saddr =

(com.voytechs.jnetstream.primitive.address.IpAddress)saddrField.getValue();
   String saddrStr = saddr.getInetObject().getHostAddress();

// skip not udp packets
            if (packet.getHeader("UDP") == null)
            {
                continue;
            }

   // send this buffer, timestamp and source IP to SNMP4J
   // you should oi
}