Code after readObject () does not run

I am working on a UI that reads a serialized object from a zookeeper, deserializes it, and then converts it to JSON. For some reason I am unable to deserialize the MQTopic object. But I can do the same with other objects.

This is the part that converts the [] byte to an MQTopic object.

if (tester != null && tester.contains("com.ibm.mq.jms.MQTopic")) {
                System.out.println(getValue());
                ByteArrayInputStream in = new ByteArrayInputStream(this.value);
                ObjectInputStream is = new ObjectInputStream(in);
                System.out.println("after deserializing..");
                topic = (MQTopic) is.readObject();
                System.out.println("after typecasting..");
                System.out.println(topic.getTopicName());
                System.out.println(topic.toString());

                is.close();
                in.close();

            }

      

        
        
        
      

    

Here, the value is the byte array of the object after serialization. Nothing starts after topic = (MQTopic) is.readObject();

. Even print statements. The program is neither terminated, nor is an exception thrown or thrown.

EDIT : The whole method

public String getStrValue() {
    FtpConnectionInfo ftp = null;
    MQTopic topic = null;
    try {
        String tester = new String(this.value, "UTF-8");
        if (tester != null && tester.contains("FtpConnectionInfo")) {
            ByteArrayInputStream in = new ByteArrayInputStream(this.value);
            ObjectInputStream is = new ObjectInputStream(in);
            ftp = (FtpConnectionInfo) is.readObject();
            in.close();
            is.close();
            Gson gson = new Gson();
            return gson.toJson(ftp);

        } else if (tester != null
                && tester.contains("com.ibm.mq.jms.MQTopic")) {
            ByteArrayInputStream in = new ByteArrayInputStream(this.value);
            ObjectInputStream is = new ObjectInputStream(in);
            System.out.println("after deserializing..");
            topic = (MQTopic) is.readObject();
            System.out.println("after typecasting..");
            System.out.println(topic.getTopicName());
            System.out.println(topic.toString());
            is.close();
            in.close();

        } else {
            return new String(this.value, "UTF-8");
        }
    } catch (UnsupportedEncodingException ex) {
        System.out.println("unsupported error ");
        ex.printStackTrace();
        //logger.error(Arrays.toString(ex.getStackTrace()));
    } catch (Exception e) {
        System.out.println("Exception in new logic.");
        e.printStackTrace();
    }
    System.out.println("im out of try");

    return null;
}

      

        
        
        
      

    

The FTP if protocol works great, but the Subject loop doesn't work outside of typing.

EDIT 2: How does another command store the object in Zookeeper

public static byte[] serialize(Object obj) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ObjectOutputStream os = new ObjectOutputStream(out);
        os.writeObject(obj);
        return out.toByteArray();
    }

      

        
        
        
      

    

The [] byte is stored in Zookeeper and this is what I retrieve in my interface.

EDIT 3: I have debugged the process and at the point where it is called these are the values. Can anyone tell me if the object is correct?