Java Sieciowa #1

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main
{
    public static void main(String[] args)
    {
        double[] liczby = { Math.PI, Math.PI/2, 7.5, 2, Math.E };

        try(FileOutputStream fos = new FileOutputStream("liczby.dat"))
        {
            DataOutputStream dos = new DataOutputStream(fos);
            for(int i = 0; i < liczby.length; i++)
            {
                dos.writeDouble(liczby[i]);
            }
            dos.flush();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }

        try(FileInputStream fis = new FileInputStream("liczby.dat"))
        {
            DataInputStream dis = new DataInputStream(fis);
            while(dis.available() != 0)
            {
                double current = dis.readDouble();
                System.out.println(current);
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

    }
}