Enregistrment des résultats obtenues dans un fichier csv en java

package ping;

import java.io.*;
import java.net.*;
import java.util.*;
import java.util.stream.*;

public class PingTest {

    public static InetAddress address170FromRange(int range) {
        try {
            return InetAddress.getByAddress(new byte[] { (byte) 170, 0, 0, (byte) range });
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public static void main(String[] args) {
        List<InetAddress> addresses = IntStream.range(1, 166 + 1).mapToObj(PingTest::address170FromRange).collect(Collectors.toList());
        new Timer().schedule(new PingTask("C:/ping.csv", addresses, 5_000), 0, 15 * 60_000);
    }
}

package ping;

import java.io.*;
import java.net.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.stream.*;

public class PingTask extends TimerTask {

    private final String fileName;
    private final Collection<InetAddress> addresses;
    private final int timeout;
    private final ForkJoinPool pool;

    public PingTask(String fileName, Collection<InetAddress> adresses, int timeout) {
        this.fileName = fileName;
        this.addresses = adresses;
        this.timeout = timeout;
        this.pool = new ForkJoinPool(addresses.size());
    }

    @Override
    public void run() {
        System.out.println("Running pings.");
        pool.execute(this::pings);
    }

    private void pings() {
        try (FileWriter fw = new FileWriter(fileName, true)) {
            fw.write(addresses.parallelStream().map(this::ping).sorted().collect(Collectors.joining("\n", "", "\n")));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private String ping(InetAddress address) {
        String result = String.format("%1$tF %1$tT;%2$s;", new Date(), address.getHostAddress());
        try {
            return result + address.isReachable(timeout);
        } catch (RuntimeException | IOException e) {
            return result + "error;" + e;
        }
    }
}

package ping;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.DateFormatSymbols;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class pingBiodec {


  public static void main(String[] args) throws UnknownHostException, IOException {
       
      int MINUTES = 15; // The delay in minutes
      Timer timer = new Timer();
       timer.schedule(new TimerTask() {
          @Override
          public void run() { // Function runs every MINUTES minutes.
              // Run the code you want here
           
             
              Date aujourdhui = new Date();
              DateFormatSymbols monDFS = new DateFormatSymbols();
              String[] joursCourts = new String[] {
                  "",      
                  "lundi",
                  "Mardi",
                  "mercredi",
                  "jeudi",     
                  "vendredi",
                  "samedi",
                  "dimanche" };

               
        monDFS.setShortWeekdays(joursCourts);
        SimpleDateFormat dateFormat = new SimpleDateFormat(
        "EEEEEEEE dd MMM yyyy HH:mm:ss",  
        monDFS);
        System.out.println(dateFormat.format(aujourdhui));
          
           InetAddress inet = null;
         
           for(int i=1;i<=166;i++){
                  try {
     
      
      inet = InetAddress.getByAddress(new byte[] { (byte) 170, (byte) 0, 0,(byte)i});
          
      
     
     } catch (UnknownHostException e) {e.printStackTrace();} 
                  System.out.println("Sending Ping Request to " + inet);
           try {
      System.out.println(inet.isReachable(5000) ? "OK" : "ERR" );
      
     } catch (IOException e) {
     
      e.printStackTrace();
     }
           }
       
           }
          } , 0, 1000 * 60 * MINUTES);
          // 1000 milliseconds in a second * 60 per minute * the MINUTES variable. 


  

}}