Assignment2

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.Vector;

public class Main {import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;
import java.util.Vector;

public class Main {
    public static void main(String[] args) {
        int counter = 0;
        File file = new File("/home/ohamdan/source/Assignment2/src/main/resources/ips.out");
        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
             ObjectInputStream ois = new ObjectInputStream(bis)) {
            Date date = (Date) ois.readObject();
            Vector<InetAddress> addresses = (Vector<InetAddress>) ois.readObject();
            Vector<InetAddress> newAddresses =new Vector<>();
            for (int i = 0; i < addresses.size(); i++) {
                InetAddress address = addresses.get(i);
                if (address.toString().startsWith("/")) {
                    counter++;
                    DNSLookup(address.getHostAddress(), newAddresses);
                    continue;
                }
                newAddresses.addElement(address);
            }
            for (InetAddress address : newAddresses) {
                System.out.println(address);
            }
            System.out.println("Number of InetAddress objects without a name: " + counter);
            System.out.println(date);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void DNSLookup(String hostAddress, Vector<InetAddress> vector) {

        try {
            InetAddress temp=InetAddress.getByName(hostAddress);
            System.out.println(hostAddress);

            vector.addElement(temp);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

    public static void main(String[] args) {
        int counter = 0;
        File file = new File("/home/ohamdan/source/Assignment2/src/main/resources/ips.out");
        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
             ObjectInputStream ois = new ObjectInputStream(bis)) {
            Date date = (Date) ois.readObject();
            Vector<InetAddress> addresses = (Vector<InetAddress>) ois.readObject();
            Vector<InetAddress> newAddresses =new Vector<>();
            for (int i = 0; i < addresses.size(); i++) {
                InetAddress address = addresses.get(i);
                if (address.toString().startsWith("/")) {
                    counter++;
                    DNSLookup(address.getHostAddress(), newAddresses);
                    continue;
                }
                newAddresses.addElement(address);
            }
            for (InetAddress address : newAddresses) {
                System.out.println(address);
            }
            System.out.println("Number of InetAddress objects without a name: " + counter);
            System.out.println(date);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void DNSLookup(String hostAddress, Vector<InetAddress> vector) {

        try {
            InetAddress temp=InetAddress.getByName(hostAddress);
            System.out.println(hostAddress);

            vector.addElement(temp);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}