Dodanie nowej linii w Java FileOutputStream

                try {
                    FileOutputStream fos = new FileOutputStream("myfile.txt");
                    ObjectOutputStream oos = new ObjectOutputStream(fos);
                    oos.writeObject(Baza);
                    oos.flush();
                    oos.close();
                    
                } catch (Exception e) {
                    System.out.println(e);
                }
                System.out.println("Zapisano ");
                
                
                try {
                    FileInputStream fis = new FileInputStream("myfile.txt");
                    ObjectInputStream ois = new ObjectInputStream(fis);         
                    List<Pracownik> ds=(List<Pracownik>) ois.readObject();
                    System.out.println(ds);
                    ois.close();
                } catch (Exception e) {
                    System.out.println(e);
                }

                System.out.println(ds); 

               for(int i=0;i<ds.size();i++){
                System.out.println(ds.get(i));
                System.lineSeparator();
                } 

for(Pracownik pracownik : pracownicy){
     System.out.println(pracownik);
} 

pracownicy.forEach(System.out::println);