asd111

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class RegexMatches
{
    public static void main( String args[] ){

      // Строка, которую будем парсить
      String line = "<div class=\\"blockk\\">Free memory: 29568 b.<br><hr>";

       // Наша регулярка
      String pattern = "<div class=\\"blockk\\">Free memory: (.+?).<br><hr>";

      Pattern r = Pattern.compile(pattern);
      Matcher m = r.matcher(line);

      // Если нашли то выводим
      while (m.find( )) {
         System.out.println("Found value: " + m.group(0) );
      } else {
         System.out.println("NO MATCH");
      }
   }
}

package org.jnetpcap.examples;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.jnetpcap.Pcap;
import org.jnetpcap.PcapIf;

public class PcapSendPacketExample {
  public static void main(String[] args) {
    List<PcapIf> alldevs = new ArrayList<PcapIf>(); // Will be filled with NICs
    StringBuilder errbuf = new StringBuilder(); // For any error msgs

    /***************************************************************************
     * First get a list of devices on this system
     **************************************************************************/
    int r = Pcap.findAllDevs(alldevs, errbuf);
    if (r == Pcap.NOT_OK || alldevs.isEmpty()) {
      System.err.printf("Can't read list of devices, error is %s", errbuf.toString());
      return;
    }
    PcapIf device = alldevs.get(0); // We know we have atleast 1 device

    /*****************************************
     * Second we open a network interface
     *****************************************/
    int snaplen = 64 * 1024; // Capture all packets, no trucation
    int flags = Pcap.MODE_PROMISCUOUS; // capture all packets
    int timeout = 10 * 1000; // 10 seconds in millis
    Pcap pcap = Pcap.openLive(device.getName(), snaplen, flags, timeout, errbuf);


    /*******************************************************
     * Third we create our crude packet we will transmit out
     * This creates a broadcast packet
     *******************************************************/
    byte[] a = new byte[14];
    Arrays.fill(a, (byte) 0xff);
    ByteBuffer b = ByteBuffer.wrap(a);

    /*******************************************************
     * Fourth We send our packet off using open device
     *******************************************************/
    if (pcap.sendPacket(b) != Pcap.OK) {
      System.err.println(pcap.getErr());
    }

    /********************************************************
     * Lastly we close
     ********************************************************/
    pcap.close();
  }
}