serializer and deserializer

    public static  byte[] serialize(Object o) throws IOException
    {
      
//      Kryo kryo = new Kryo();
//      kryo.setDefaultSerializer(CompatibleFieldSerializer.class);
//      Output output = new Output(4096, -1);
//      kryo.writeClassAndObject(output,o);
//      output.close();
//      return output.toBytes();
      ByteArrayOutputStream  ostream = new ByteArrayOutputStream();
      ObjectOutputStream oos = new ObjectOutputStream(ostream);
      oos.writeObject(o);
      oos.flush();
      oos.close();
      byte[] buffer = ostream.toByteArray();
      return buffer;
    }
    
    
    public static <T> T deserialize( final byte[] buffer, final Class<T> clazz ) throws IOException, ClassNotFoundException
    {
    	
//        Kryo kryo = new Kryo();
//        kryo.setDefaultSerializer(CompatibleFieldSerializer.class);
//        kryo.setRegistrationRequired(false);
//        Input input = new Input(buffer);
//        return (T)kryo.readClassAndObject(input);
        
    	ByteArrayInputStream instr = new ByteArrayInputStream(buffer);
        ObjectInputStream ois = new ObjectInputStream(instr);
        return  (T)ois.readObject();
    }
    public static  Object deserialize(byte[] buffer) throws IOException, ClassNotFoundException
    {
//    	
//      Kryo kryo = new Kryo();
//      kryo.setDefaultSerializer(CompatibleFieldSerializer.class);
//      kryo.setRegistrationRequired(false);
//      Input input = new Input(buffer);
//      return kryo.readClassAndObject(input);
    	
    	ByteArrayInputStream instr = new ByteArrayInputStream(buffer);
        ObjectInputStream ois = new ObjectInputStream(instr);
        return  ois.readObject();
    }