public class javacap
{
        public native void open(String name, int bufferSize);
        public native void close();
        public native void read(byte[] b);
        public native String getError();
        public native int getDataLinkType();
        public native int getPacketLength();
        public native int getCapturedLength();
        public native int setFilter(String rule, int netmask);
        public native int getReceivedPackets();
        public native int getDroppedPackets();

        static {
                System.loadLibrary("javacap");
        }
}