Преобразование объекта в байт[] в Java

  // Convert object to byte[]
  public static byte[] convertObjectToBytes(Object obj) {
      ByteArrayOutputStream boas = new ByteArrayOutputStream();
      try (ObjectOutputStream ois = new ObjectOutputStream(boas)) {
          ois.writeObject(obj);
          return boas.toByteArray();
      } catch (IOException ioe) {
          ioe.printStackTrace();
      }
      throw new RuntimeException();
  }

  // Convert object to byte[]
  public static byte[] convertObjectToBytes2(Object obj) throws IOException {
      ByteArrayOutputStream boas = new ByteArrayOutputStream();
      try (ObjectOutputStream ois = new ObjectOutputStream(boas)) {
          ois.writeObject(obj);
          return boas.toByteArray();
      }
  }

  // Convert byte[] to object
  public static Object convertBytesToObject(byte[] bytes) {
      InputStream is = new ByteArrayInputStream(bytes);
      try (ObjectInputStream ois = new ObjectInputStream(is)) {
          return ois.readObject();
      } catch (IOException | ClassNotFoundException ioe) {
          ioe.printStackTrace();
      }
      throw new RuntimeException();
  }

  // Convert byte[] to object
  public static Object convertBytesToObject2(byte[] bytes)
      throws IOException, ClassNotFoundException {
      InputStream is = new ByteArrayInputStream(bytes);
      try (ObjectInputStream ois = new ObjectInputStream(is)) {
          return ois.readObject();
      }
  }

  // Convert byte[] to object with filter
  public static Object convertBytesToObjectWithFilter(byte[] bytes, ObjectInputFilter filter) {
      InputStream is = new ByteArrayInputStream(bytes);
      try (ObjectInputStream ois = new ObjectInputStream(is)) {

          // add filter before readObject
          ois.setObjectInputFilter(filter);

          return ois.readObject();
      } catch (IOException | ClassNotFoundException ioe) {
          ioe.printStackTrace();
      }
      throw new RuntimeException();
  }