Welcome!

Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Java IoT, Machine Learning , Apache

Java IoT: Blog Post

Java Serialization without Serializable Interface

As you know in case of Core Java to serialize an object it is mandatory to implement Serializable interface and serialVersionUID

The title of this article seems unpleasant as it talks about serializing java object graph without the use of Serializable interface. It is true in case of Core Java. We know that to serialize a java bean we have to implement Serializable interface ( let us not consider the Externalizable interface ).In this article I will show how it is possible to serialize a java object without implementing Serializable interface using a library from a famous organisation called Jboss. In this small post I will make you familiar with “Jboss Serialization”.

Technicalities
As you know in case of Core Java to serialize an object it is mandatory to implement Serializable interface and serialVersionUID( optional ). There are certain situations in the project development where we want to serialize the object but that particular object does not implement Serializable interface and we may not have access to the source code. In this case I am not saying that it is impossible to we will find it difficult to serialize the object graph. But the introduction of Jboss Serialization API made it very simple to serialize an object irrespective of the serialization specification.  To use “Jboss Serialization” you have to download the zip file available in jboss site. The link for download is given below in the references section. You have to note that jboss serialization api depends upon two other libraries called “log4j.jar” and “trove.jar”. You have to put the two jar files in the classpath along with “jboss-serialization.jar”. If you are using normal java project you should have three jar files in your library as mentioned below.

log4j.jar

trove.jar

jboss-serialization.jar

If you are using Maven, you have to use the following dependency as mentioned below.

<dependency>

<groupId>jboss</groupId>

<artifactId>jboss-serialization</artifactId>

<version>4.2.2.GA</version>

</dependency>

How to do

Let us consider a very small example of java Object graph ie Organisation object contains Employee object which has name and id as fields. The code is given below.

package com.ddlab.jboss.serilization;

/**

* This is a plain java class with the fields name and id.

*

* @author <a href="mailto:debadatta.mishra@gmail.com"> Debadatta Mishra (PIKU)

* @Since Jan 2013

*/

public class Employee {

private String name;

private String id;

// ~~ Getter and Setter Methods below

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

}

 

 

 

 

package com.ddlab.jboss.serilization;

/**

* This is a plain java class with the field type {@link Employee}.

*

* @author <a href="mailto:debadatta.mishra@gmail.com"> Debadatta Mishra (PIKU)

* @Since Jan 2013

*/

public class Organisation {

private Employee emp;

public Employee getEmp() {

return emp;

}

public void setEmp(Employee emp) {

this.emp = emp;

}

}

In the above case you can mark that none of the classes implement Serializable interface. Ok, that’s great. To use jboss serialization and deserialization only replace “ObjectOutputStream” to “JBossObjectOutputStream” and “ObjectInputStream” to “JbossObjectInputStream”. Let us see concrete example code below.

package com.ddlab.jboss.serilization;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import org.jboss.serial.io.JBossObjectInputStream;

import org.jboss.serial.io.JBossObjectOutputStream;

/**

* This is a testharness class used to serialize and deserialize the object.

*

* @author <a href="mailto:debadatta.mishra@gmail.com"> Debadatta Mishra (PIKU)

* @Since Jan 2013

*/

public class TestJbossSerilization {

public static void storeObject(Organisation org, String filePath) {

JBossObjectOutputStream objOut = null;

OutputStream out = null;

File file = new File(filePath);

try {

out = new FileOutputStream(file);

} catch (FileNotFoundException e) {

e.printStackTrace();

}

try {

objOut = new JBossObjectOutputStream(out);

objOut.writeObject(org);

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

if (objOut != null)

objOut.close();

if (out != null)

out.close();

} catch (IOException e) {

e.printStackTrace();

}

}

System.out

.println("Object Organisation is serialized successfully in the path "

+ file.getAbsolutePath());

}

public static void retrieveObject(String filePath) {

InputStream inStream = null;

try {

inStream = new FileInputStream(filePath);

} catch (FileNotFoundException e) {

e.printStackTrace();

}

JBossObjectInputStream objIn = null;

try {

objIn = new JBossObjectInputStream(inStream);

} catch (IOException e) {

e.printStackTrace();

}

Organisation org;

try {

org = (Organisation) objIn.readObject();

System.out.println("Employee Name : " + org.getEmp().getName());

System.out.println("Employee Id : " + org.getEmp().getId());

} catch (IOException e) {

e.printStackTrace();

} catch (ClassNotFoundException e) {

e.printStackTrace();

} finally {

try {

if (objIn != null)

objIn.close();

if (inStream != null)

inStream.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

public static void main(String[] args) throws Exception {

String filePath = "data/org.ser";

Organisation org = new Organisation();

Employee emp = new Employee();

emp.setId("111");

emp.setName("Deba");

org.setEmp(emp);

/*

* Serialize the object graph

*/

storeObject(org, filePath);

/*

* De-serialize the object graph

*/

retrieveObject(filePath);

}

}

You can download the complete project from the following link.

https://www.dropbox.com/s/drkl2rqxizt1x3a/jbossserialization.zip

So we have achieved serialization of java object graph without implementing Serializable interface. There are certain benefits of using it.

  1. There is no need to implement Serializable interface.
  2. No need to define serialVersionUID.
  3. Since it uses the concept of smart cloning, the process of serialization if 10 times faster.

Conclusion

I hope you will enjoy my article on serialization. You can download and learn for your personal use only. For any queries contact me on [email protected].

References

http://www.jboss.org/serialization

http://www.jboss.org/file-access/default/members/serialization/downloads/jboss-serialization-1.0.3.GA.zip

http://mvnrepository.com/artifact/jboss/jboss-serialization/4.2.2.GA

http://en.wikipedia.org/wiki/Serialization

More Stories By Debadatta Mishra

Debadatta Mishra is a senior Java developer with five years of experience in the field of Java and related technologies. He has written many articles on Java-related technologies on the Internet.

@ThingsExpo Stories
While the focus and objectives of IoT initiatives are many and diverse, they all share a few common attributes, and one of those is the network. Commonly, that network includes the Internet, over which there isn't any real control for performance and availability. Or is there? The current state of the art for Big Data analytics, as applied to network telemetry, offers new opportunities for improving and assuring operational integrity. In his session at @ThingsExpo, Jim Frey, Vice President of S...
With the introduction of IoT and Smart Living in every aspect of our lives, one question has become relevant: What are the security implications? To answer this, first we have to look and explore the security models of the technologies that IoT is founded upon. In his session at @ThingsExpo, Nevi Kaja, a Research Engineer at Ford Motor Company, discussed some of the security challenges of the IoT infrastructure and related how these aspects impact Smart Living. The material was delivered interac...
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
Amazon started as an online bookseller 20 years ago. Since then, it has evolved into a technology juggernaut that has disrupted multiple markets and industries and touches many aspects of our lives. It is a relentless technology and business model innovator driving disruption throughout numerous ecosystems. Amazon’s AWS revenues alone are approaching $16B a year making it one of the largest IT companies in the world. With dominant offerings in Cloud, IoT, eCommerce, Big Data, AI, Digital Assista...
The Founder of NostaLab and a member of the Google Health Advisory Board, John is a unique combination of strategic thinker, marketer and entrepreneur. His career was built on the "science of advertising" combining strategy, creativity and marketing for industry-leading results. Combined with his ability to communicate complicated scientific concepts in a way that consumers and scientists alike can appreciate, John is a sought-after speaker for conferences on the forefront of healthcare science,...
In his session at Cloud Expo, Alan Winters, U.S. Head of Business Development at MobiDev, presented a success story of an entrepreneur who has both suffered through and benefited from offshore development across multiple businesses: The smart choice, or how to select the right offshore development partner Warning signs, or how to minimize chances of making the wrong choice Collaboration, or how to establish the most effective work processes Budget control, or how to maximize project result...
In his keynote at 19th Cloud Expo, Sheng Liang, co-founder and CEO of Rancher Labs, discussed the technological advances and new business opportunities created by the rapid adoption of containers. With the success of Amazon Web Services (AWS) and various open source technologies used to build private clouds, cloud computing has become an essential component of IT strategy. However, users continue to face challenges in implementing clouds, as older technologies evolve and newer ones like Docker c...
Personalization has long been the holy grail of marketing. Simply stated, communicate the most relevant offer to the right person and you will increase sales. To achieve this, you must understand the individual. Consequently, digital marketers developed many ways to gather and leverage customer information to deliver targeted experiences. In his session at @ThingsExpo, Lou Casal, Founder and Principal Consultant at Practicala, discussed how the Internet of Things (IoT) has accelerated our abilit...
When shopping for a new data processing platform for IoT solutions, many development teams want to be able to test-drive options before making a choice. Yet when evaluating an IoT solution, it’s simply not feasible to do so at scale with physical devices. Building a sensor simulator is the next best choice; however, generating a realistic simulation at very high TPS with ease of configurability is a formidable challenge. When dealing with multiple application or transport protocols, you would be...
Data is the fuel that drives the machine learning algorithmic engines and ultimately provides the business value. In his session at Cloud Expo, Ed Featherston, a director and senior enterprise architect at Collaborative Consulting, discussed the key considerations around quality, volume, timeliness, and pedigree that must be dealt with in order to properly fuel that engine.
Two weeks ago (November 3-5), I attended the Cloud Expo Silicon Valley as a speaker, where I presented on the security and privacy due diligence requirements for cloud solutions. Cloud security is a topical issue for every CIO, CISO, and technology buyer. Decision-makers are always looking for insights on how to mitigate the security risks of implementing and using cloud solutions. Based on the presentation topics covered at the conference, as well as the general discussions heard between sessio...
Detecting internal user threats in the Big Data eco-system is challenging and cumbersome. Many organizations monitor internal usage of the Big Data eco-system using a set of alerts. This is not a scalable process given the increase in the number of alerts with the accelerating growth in data volume and user base. Organizations are increasingly leveraging machine learning to monitor only those data elements that are sensitive and critical, autonomously establish monitoring policies, and to detect...
Dion Hinchcliffe is an internationally recognized digital expert, bestselling book author, frequent keynote speaker, analyst, futurist, and transformation expert based in Washington, DC. He is currently Chief Strategy Officer at the industry-leading digital strategy and online community solutions firm, 7Summits.
In his session at @ThingsExpo, Arvind Radhakrishnen discussed how IoT offers new business models in banking and financial services organizations with the capability to revolutionize products, payments, channels, business processes and asset management built on strong architectural foundation. The following topics were covered: How IoT stands to impact various business parameters including customer experience, cost and risk management within BFS organizations.
Recently, REAN Cloud built a digital concierge for a North Carolina hospital that had observed that most patient call button questions were repetitive. In addition, the paper-based process used to measure patient health metrics was laborious, not in real-time and sometimes error-prone. In their session at 21st Cloud Expo, Sean Finnerty, Executive Director, Practice Lead, Health Care & Life Science at REAN Cloud, and Dr. S.P.T. Krishnan, Principal Architect at REAN Cloud, discussed how they built...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settl...
IoT solutions exploit operational data generated by Internet-connected smart “things” for the purpose of gaining operational insight and producing “better outcomes” (for example, create new business models, eliminate unscheduled maintenance, etc.). The explosive proliferation of IoT solutions will result in an exponential growth in the volume of IoT data, precipitating significant Information Governance issues: who owns the IoT data, what are the rights/duties of IoT solutions adopters towards t...
With tough new regulations coming to Europe on data privacy in May 2018, Calligo will explain why in reality the effect is global and transforms how you consider critical data. EU GDPR fundamentally rewrites the rules for cloud, Big Data and IoT. In his session at 21st Cloud Expo, Adam Ryan, Vice President and General Manager EMEA at Calligo, examined the regulations and provided insight on how it affects technology, challenges the established rules and will usher in new levels of diligence arou...
Organizations planning enterprise data center consolidation and modernization projects are faced with a challenging, costly reality. Requirements to deploy modern, cloud-native applications simultaneously with traditional client/server applications are almost impossible to achieve with hardware-centric enterprise infrastructure. Compute and network infrastructure are fast moving down a software-defined path, but storage has been a laggard. Until now.
DXWorldEXPO LLC announced today that All in Mobile, a mobile app development company from Poland, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. All In Mobile is a mobile app development company from Poland. Since 2014, they maintain passion for developing mobile applications for enterprises and startups worldwide.