Home » Java » Enterprise Java » Twitter4j and Esper: Tracking user sentiments on Twitter

About Mahesh Gadgil

Mahesh Gadgil

Twitter4j and Esper: Tracking user sentiments on Twitter

For new comers to Complex Event Processing  and Twitter API, I hope this serves as a short tutorial and helps them get off the ground quickly.

Managing big data and mining useful information from it is the hottest discussion topic in technology right now. Explosion of growth in semi-structured data flowing from social networks like Twitter, Facebook and Linkedin is making technologies like Hadoop, Cassandra a part of every technology conversation. So as not to fall behind of competition, all customer centric organizations are actively engaged in creating social strategies.
What can a company get out of data feeds from social networks? Think location based services, targeted advertisements and algorithm equity trading for starters. IDC Insights have some informative blogs on the relationship between big data and business analytics. Big data in itself will be meaningless unless the right analytic tools are available to sift through it, explains Barb Darrow in her blog post  on gigaom.com

Companies often listen into social feeds to learn customers’ interest or perception about the products. They also are trying to identify “influencers” – the one with most connections in a social graph – so they could make better offers to such individuals and get better mileage out of their marketing. The companies involved in equity trading want to know which public trading companies are discussed on Twitter and what are the users’ sentiments about them.

From big companies like IBM to  smaller start-ups, everyone is racing to make most of the opportunities of big data management and analytics. Much documentation about big data like this ebook from IBM ‘Big Data Platform’  is freely available on the web. However a lot of this covers theory only. Jouko Ahvenainen in reply to Barb Darrow’s post above makes a good point that “many people who talk about the opportunity of big data are on too general level, talk about better customer understanding, better sales, etc. In reality you must be very specific, what you utilize and how”.

It does sound reasonable, doesn’t it? So I set out to investigate this a bit further by prototyping an idea, the only good option I know. If I could do it, anybody could do it. The code is remarkably simple. But, that’s exactly the point. Writing CEP framework yourself is quite complex but using it is not. Same way, Twitter makes it real easy to get to the information through REST API.

Big Data – http://www.bigdatabytes.com/managing-big-data-starts-here/
Complex Event Processing (CEP), I blogged previously (click here to read) is a critical component of the big data framework. Along with CEP, frameworks with  Hadoop are used to compile, parse and make sense out of the 24×7 stream of data from the social networks. Today,  Twitter’s streaming api and CEP could be used together to capture the happiness levels of twitter users. The code I present below listens in to live tweets to generate an ‘happy’ event every time “lol” is found in the text of a tweet. The CEP is used to capture happy events and alert is raised every time the count of happy events exceed pre-determined number in a pre-determined time period. An assumption that a user is happy every time he or she uses “lol” is very simplistic, but it helps get the point across. In practice, gauging the users’ sentiment is not that easy because it involves natural language analysis. Consider below the example that highlights the complexities of analyzing natural language.

Iphone has never been good.

Iphone has never been so good.

As you can see, addition of just one word to the sentence completely changed the meaning. Because of this reason, natural language processing is considered one of the toughest problems in computer science. You can learn “natural language processing” using free online lectures offered by Stanford University. This link  takes you directly to the first lecture on natural language analysis by Christopher Manning. But, in my opnion, the pervasive use of abbreviations in social media and in modern lingo in general, is making the task a little bit easier. Abbreviations like “lol” and “AFAIK” accurately project the meaning. The use of “lol” projects “funny” and “AFAIK” may indicate the user is “unsure” of him or herself.

The code presented below uses Twitter4j api to listen to live twitter feed and Esper CEP to listen to events and alert us when a threshold is met. You can download twitter4j binaries or source from http://twitter4j.org/en/index.html and Esper from http://esper.codehaus.org/ . Before you execute the code, make sure to create a twitter account if you don’t have one and also read Twitter’s guidelines and concepts  its streaming API here . The authentication through just username & password combination is currently allowed by Twitter but it is going to be phased out in favor of oAuth authentication in near future. Also, pay close attention to their ‘Access and Rate Limit’ section.

The code below uses streaming api in one thread. Please do not use another thread at the same time to avoid hitting the rate limit. Hitting rate limits consistently can result into Twitter blacklisting your twitter ID. Also it is important to note that, the streaming API is not sending each and every tweet our way. Twitter typically will sample the data by sending 1 out every 10 tweets our way. This is not a problem however for us, as long as we are interested in patterns in the data and not in any specific tweet. Twitter offers a paid service for  businesses that need streaming data with no rate limits. Following diagram shows the components and processing of data.

Diagram. Charts & DB not yet implemented in the code
package com.sybase.simple;

public class HappyMessage {
 public String user;
 private final int ctr=1;
 public String getUser() {
  return user;
 }
 public void setUser(String user) {
  this.user = user;
 }
 public int getCtr() {
  return ctr;
 }
} 

Listing 1. Standard java bean representing a happy event.

package com.sybase.simple;

package com.sybase.simple;

import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.UpdateListener;

public class HappyEventListener implements UpdateListener{
 public void update(EventBean[] newEvents, EventBean[] oldEvents) {
  try {
   if (newEvents == null) {

    return;
   }
   EventBean event = newEvents[0];
   System.out.println("exceeded the count, actual " + event.get("sum(ctr)"));
  } catch (Exception e) {
   e.printStackTrace();
  }

 }
}

Listing 2. Esper listener is defined.

package com.sybase.simple;

package com.sybase.simple;

import java.io.IOException;

import twitter4j.Status;
import twitter4j.StatusDeletionNotice;
import twitter4j.StatusListener;
import twitter4j.TwitterException;
import twitter4j.TwitterStream;
import twitter4j.TwitterStreamFactory;
import twitter4j.conf.Configuration;
import twitter4j.conf.ConfigurationBuilder;

import com.espertech.esper.client.EPServiceProvider;
import com.espertech.esper.client.EPServiceProviderManager;
import com.espertech.esper.client.EPStatement;

public class TwitterTest {
 static EPServiceProvider epService;

 public static void main(String[] args) throws TwitterException, IOException {

  // Creating and registering the CEP listener

  com.espertech.esper.client.Configuration config1 = new com.espertech.esper.client.Configuration();
  config1.addEventType("HappyMessage", HappyMessage.class.getName());
  epService = EPServiceProviderManager.getDefaultProvider(config1);
  String expression = "select user, sum(ctr) from com.sybase.simple.HappyMessage.win:time(10 seconds) having sum(ctr) > 2";

  EPStatement statement = epService.getEPAdministrator().createEPL(
    expression);
  HappyEventListener happyListener = new HappyEventListener();
  statement.addListener(happyListener);

  ConfigurationBuilder cb = new ConfigurationBuilder();
  cb.setDebugEnabled(true);
  //simple http form based authentication, you can use oAuth if you have one, check Twitter4j documentation
  cb.setUser("your Twitter user name here");
  cb.setPassword("Your Twitter password here");

  // creating the twitter listener

  Configuration cfg = cb.build();
  TwitterStream twitterStream = new TwitterStreamFactory(cfg)
    .getInstance();
  StatusListener listener = new StatusListener() {
   public void onStatus(Status status) {

    if (status.getText().indexOf("lol") > 0) {
     System.out.println("********* lol found *************");
     raiseEvent(epService, status.getUser().getScreenName(),
       status);
    }
   }

   public void onDeletionNotice(
     StatusDeletionNotice statusDeletionNotice) {
    System.out.println("Got a status deletion notice id:"
      + statusDeletionNotice.getStatusId());
   }

   public void onTrackLimitationNotice(int numberOfLimitedStatuses) {
    System.out.println("Got track limitation notice:"
      + numberOfLimitedStatuses);
   }

   public void onScrubGeo(long userId, long upToStatusId) {
    System.out.println("Got scrub_geo event userId:" + userId
      + " upToStatusId:" + upToStatusId);
   }

   public void onException(Exception ex) {
    ex.printStackTrace();
   }
  };
  twitterStream.addListener(listener);

  //
  twitterStream.sample();

 }

 private static void raiseEvent(EPServiceProvider epService, String name,
   Status status) {
  HappyMessage msg = new HappyMessage();
  msg.setUser(status.getUser().getScreenName());
  epService.getEPRuntime().sendEvent(msg);
 }

}
} 

Listing 3.

Twitter4j listener is created. This listener and CEP listener start listening. Every twitter post is parsed for ‘lol’. Every time ‘lol’ is found, an happy event is generated. CEP listener raises an alert every time the total count of ‘lol’ exceeds 2 in last 10 seconds.
The code establishes a long running thread to get twitter feeds. You will see the output on the console every time threshold is met. Please remember to terminate the program, it doesn’t terminate on its own.

Now that you have this basic functionality working, you can extend this prototype in number of ways. You can handle additional data feeds (from source other than Twitter) and use Esper to corelate data from the two data feeds. For visually appealing output, you can feed the output to some charting library. For example, every time Esper identifies an event, the data point is used to render a point on a line graph. If you track the ‘happy event’ this way, then the graph will essentially show the ever changing level of happiness of Twitter users over a period of time.

Please use comment section for your feedback, +1 to share and let me know if you would like to see more postings on this subject.

Reference: Tracking user sentiments on Twitter with Twitter4j and Esper from our JCG partner Mahesh Gadgil at the Simple yet Practical blog.

Do you want to know how to develop your skillset to become a Java Rockstar?
Subscribe to our newsletter to start Rocking right now!
To get you started we give you our best selling eBooks for FREE!
1. JPA Mini Book
2. JVM Troubleshooting Guide
3. JUnit Tutorial for Unit Testing
4. Java Annotations Tutorial
5. Java Interview Questions
6. Spring Interview Questions
7. Android UI Design
and many more ....
Email address:

Leave a Reply

1 Comment on "Twitter4j and Esper: Tracking user sentiments on Twitter"

avatar
  Subscribe  
newest oldest most voted
Notify of
A Bauer
Guest

Nice article. I’ve been using Esper and Twitter already for some years. Works great. I’ll elaborate more on this in my PhD thesis. This supports my idea that my topic is relevant :)

Want to take your Java skills to the next level?
Grab our programming books for FREE!
Here are some of the eBooks you will get:
  • Spring Interview QnA
  • Multithreading & Concurrency QnA
  • JPA Minibook
  • JVM Troubleshooting Guide
  • Advanced Java
  • Java Interview QnA
  • Java Design Patterns
The Spring Framework Cookbook
  • Learn the best practices of the Spring Framework
  • Build simple, portable, fast and flexible JVM-based systems and applications
  • Explore specific projects like Boot and Batch
The Spring Data Programming Cookbook
  • Learn how to use data access technologies and cloud-based data services
  • Set up the environment and create a basic project
  • Learn how to handle the various modules (e.g. JPA, MongoDB, Redis etc.)
The Selenium Programming Cookbook
  • Kick-start your own projects using this testing framework for web applications
  • Learn JUnit integration and Standalone Server functionality
  • Find out the most popular Interview Questions about the Selenium Framework
The Mockito Programming Cookbook
  • Kick-start your own web projects using this open source testing framework
  • Write simple test cases using the Mockito Framework
  • Learn how to integrate with JUnit, Maven and other frameworks
The JUnit Programming Cookbook
  • Learn basic usage and configuration of JUnit
  • Create multithreaded tests
  • Learn how to integrate with other testing frameworks
The JSF 2.0 Programming Cookbook
  • Build component-based user interfaces for web applications
  • Set up the environment and create a basic project
  • Learn Internationalization and Facelets Templates
The Amazon S3 Tutorial
  • Develop your own Amazon S3 based applications
  • Learn API usage and pricing
  • Get your own projects up and running in minimum time
Java Design Patterns
  • Learn how Design Patterns are implemented and utilized in Java
  • Understand the reasons why patterns are so important
  • Learn when and how to apply each one of them
Java Concurrency Essentials
  • Dive into the magic of concurrency
  • Learn about concepts like atomicity, synchronization and thread safety
  • Learn about testing concurrent applications
The IntelliJ IDEA Handbook
  • Kick-start your own programming projects using IntelliJ IDEA
  • Learn how to setup and install plugins
  • Create UIs with this Java integrated development environment
The Git Tutorial
  • Learn why Git differs from other version control systems
  • Explore Git's usage and best practises
  • Learn branching strategies
The Eclipse IDE Handbook
  • Explore the most widely used Java IDE
  • Learn how to setup and install plugins
  • Built your own projects up and running in minimum time
The Docker Containerization Cookbook
  • Explore the world’s leading software containerization platform
  • Learn how to wrap a piece of software in a complete filesystem
  • Learn how to use DNS and various commands
Developing Modern Applications With Scala
  • Develop modern Scala applications
  • Build SBT and reactive applications
  • Learn about testing and database access
The Apache Tomcat Cookbook
  • Explore Apache Tomcat open-source web server
  • Learn about installation, configuration, logging and clustering
  • Kick-start your own web projects using Apache Tomcat
The Apache Maven Cookbook
  • Explore the Apache Maven build automation tool
  • Learn about Maven's project structure and configuration
  • Learn about Maven's dependency management and plug-ins
The Apache Hadoop Cookbook
  • Explore the Apache Hadoop open-source software framework
  • Learn distributed caching and streaming
  • Kick-start your own web projects using Apache Hadoop
The Android Programming Cookbook
  • Explore the Android mobile operating system
  • Learn about services and page views
  • Learn about Google Maps and Bluetooth functionality
The Elasticsearch Tutorial
  • Explore the Elasticsearch search engine
  • Develop your own Elasticsearch based applications
  • Learn operations, Java API Integration and reporting
Amazon DynamoDB Tutorial
  • Develop your own Amazon DynamoDB based applications
  • Learn DynamoDB Concepts and Best Practices
  • Get your own projects up and running in minimum time
Java NIO Programming Cookbook
  • Learn features for intensive I/O operations
  • Follow a series of tutorials on Java NIO examples
  • Get knowledge on Java Nio Socket and Asynchronous Channels
JBoss Drools Cookbook
  • Explore Drools business rule management system
  • Follow a series of tutorials on Drools examples
  • Get knowledge on business rules for a shopping domain model
Vaadin Programming Cookbook
  • Explore Vaadin web framework for rich Internet applications
  • Learn the Architecture and Best Practices
  • Get knowledge on Data Binding and Custom Components
Groovy Programming Cookbook
  • Explore Apache Groovy object-oriented programming language
  • Create sample applications and explore interview questions
  • Get knowledge on Callback functionality and various widgets
GWT Programming Cookbook
  • Explore the open source Google Web Toolkit
  • Create sample applications and explore interview questions
  • Create and maintain complex JavaScript front-end applications in Java
Do you want to know how to develop your skillset to become a Java Rockstar?
Subscribe to our newsletter to start Rocking right now!
To get you started we give you our best selling eBooks for FREE!
1. JPA Mini Book
2. JVM Troubleshooting Guide
3. JUnit Tutorial for Unit Testing
4. Java Annotations Tutorial
5. Java Interview Questions
and many more ....
Email address:
Do you want to know how to develop your skillset to become a Java Rockstar?
Subscribe to our newsletter to start Rocking right now!
To get you started we give you our best selling eBooks for FREE!
1. JPA Mini Book
2. JVM Troubleshooting Guide
3. JUnit Tutorial for Unit Testing
4. Java Annotations Tutorial
5. Java Interview Questions
and many more ....
Email address:
Do you want to know how to develop your skillset to become a Java Rockstar?
Subscribe to our newsletter to start Rocking right now!
To get you started we give you our best selling eBooks for FREE!
1. JPA Mini Book
2. JVM Troubleshooting Guide
3. JUnit Tutorial for Unit Testing
4. Java Annotations Tutorial
5. Java Interview Questions
6. Spring Interview Questions
7. Android UI Design
and many more ....
Email address:
Want to be a DynamoDB Master ?
Subscribe to our newsletter and download the Amazon DynamoDB Tutorial right now!
In order to help you master this Amazon NoSQL database service, we have compiled a kick-ass guide with all the major DynamoDB features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Programming Interview Coming Up?
Subscribe to our newsletter and download the Ultimate Multithreading and Concurrency interview questions and answers collection right now!
In order to get you prepared for your next Programming Interview, we have compiled a huge list of relevant Questions and their respective Answers. Besides studying them online you may download the eBook in PDF format!
Email address:
Java Interview Coming Up?
Subscribe to our newsletter and download the Ultimate Spring interview questions and answers collection right now!
In order to get you prepared for your next Java Interview, we have compiled a huge list of relevant Questions and their respective Answers. Besides studying them online you may download the eBook in PDF format!
Email address:
Java Interview Coming Up?
Subscribe to our newsletter and download the Ultimate Java interview questions and answers collection right now!
In order to get you prepared for your next Java Interview, we have compiled a huge list of relevant Questions and their respective Answers. Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Java NIO Master ?
Subscribe to our newsletter and download the Java NIO Programming Cookbook right now!
In order to help you master Java NIO Library, we have compiled a kick-ass guide with all the major Java NIO features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Drools Master ?
Subscribe to our newsletter and download the JBoss Drools Cookbook right now!
In order to help you master Drools Business Rule Management System, we have compiled a kick-ass guide with all the major Drools features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be an iText Master ?
Subscribe to our newsletter and download the iText Tutorial right now!
In order to help you master iText Library, we have compiled a kick-ass guide with all the major iText features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be an Elasticsearch Master ?
Subscribe to our newsletter and download the Elasticsearch Tutorial right now!
In order to help you master Elasticsearch search engine, we have compiled a kick-ass guide with all the major Elasticsearch features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Scala Master ?
Subscribe to our newsletter and download the Scala Cookbook right now!
In order to help you master Scala, we have compiled a kick-ass guide with all the basic concepts! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JUnit Master ?
Subscribe to our newsletter and download the JUnit Programming Cookbook right now!
In order to help you master unit testing with JUnit, we have compiled a kick-ass guide with all the major JUnit features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Amazon Web Services ?
Subscribe to our newsletter and download the Amazon S3 Tutorial right now!
In order to help you master the leading Web Services platform, we have compiled a kick-ass guide with all its major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Spring Framework ?
Subscribe to our newsletter and download the Spring Framework Cookbook right now!
In order to help you master the leading and innovative Java framework, we have compiled a kick-ass guide with all its major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Eclipse IDE ?
Subscribe to our newsletter and download the Eclipse IDE Handbook right now!
In order to help you master Eclipse, we have compiled a kick-ass guide with all the basic features of the popular IDE! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master IntelliJ IDEA ?
Subscribe to our newsletter and download the IntelliJ IDEA Handbook right now!
In order to help you master IntelliJ IDEA, we have compiled a kick-ass guide with all the basic features of the popular IDE! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Docker ?
Subscribe to our newsletter and download the Docker Containerization Cookbook right now!
In order to help you master Docker, we have compiled a kick-ass guide with all the basic concepts of the Docker container system! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to create a kick-ass Android App ?
Subscribe to our newsletter and download the Android Programming Cookbook right now!
With this book, you will delve into the fundamentals of Android programming. You will understand user input, views and layouts. Furthermore, you will learn how to communicate over Bluetooth and also leverage Google Maps into your application!
Email address:
Want to be a GIT Master ?
Subscribe to our newsletter and download the GIT Tutorial eBook right now!
In order to help you master GIT, we have compiled a kick-ass guide with all the basic concepts of the GIT version control system! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Hadoop Master ?
Subscribe to our newsletter and download the Apache Hadoop Cookbook right now!
In order to help you master Apache Hadoop, we have compiled a kick-ass guide with all the basic concepts of a Hadoop cluster! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Spring Data ?
Subscribe to our newsletter and download the Spring Data Ultimate Guide right now!
In order to help you master Spring Data, we have compiled a kick-ass guide with all the major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to create a kick-ass Android App ?
Subscribe to our newsletter and download the Android UI Design mini-book right now!
With this book, you will delve into the fundamentals of Android UI design. You will understand user input, views and layouts, as well as adapters and fragments. Furthermore, you will learn how to add multimedia to an app and also leverage themes and styles!
Email address:
Want to be a Java 8 Ninja ?
Subscribe to our newsletter and download the Java 8 Features Ultimate Guide right now!
In order to get you up to speed with the major Java 8 release, we have compiled a kick-ass guide with all the new features and goodies! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Java Annotations ?
Subscribe to our newsletter and download the Java Annotations Ultimate Guide right now!
In order to help you master the topic of Annotations, we have compiled a kick-ass guide with all the major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JUnit Master ?
Subscribe to our newsletter and download the JUnit Ultimate Guide right now!
In order to help you master unit testing with JUnit, we have compiled a kick-ass guide with all the major JUnit features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Java Abstraction ?
Subscribe to our newsletter and download the Abstraction in Java Ultimate Guide right now!
In order to help you master the topic of Abstraction, we have compiled a kick-ass guide with all the major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to master Java Reflection ?
Subscribe to our newsletter and download the Java Reflection Ultimate Guide right now!
In order to help you master the topic of Reflection, we have compiled a kick-ass guide with all the major features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JMeter Master ?
Subscribe to our newsletter and download the JMeter Ultimate Guide right now!
In order to help you master load testing with JMeter, we have compiled a kick-ass guide with all the major JMeter features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Servlets Master ?
Subscribe to our newsletter and download the Java Servlet Ultimate Guide right now!
In order to help you master programming with Java Servlets, we have compiled a kick-ass guide with all the major servlet API uses and showcases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JAXB Master ?
Subscribe to our newsletter and download the JAXB Ultimate Guide right now!
In order to help you master XML Binding with JAXB, we have compiled a kick-ass guide with all the major JAXB features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JDBC Master ?
Subscribe to our newsletter and download the JDBC Ultimate Guide right now!
In order to help you master database programming with JDBC, we have compiled a kick-ass guide with all the major JDBC features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JPA Master ?
Subscribe to our newsletter and download the JPA Ultimate Guide right now!
In order to help you master programming with JPA, we have compiled a kick-ass guide with all the major JPA features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Hibernate Master ?
Subscribe to our newsletter and download the Hibernate Ultimate Guide right now!
In order to help you master JPA and database programming with Hibernate, we have compiled a kick-ass guide with all the major Hibernate features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a JSF Master ?
Subscribe to our newsletter and download the JSF 2.0 Programming Cookbook right now!
In order to get you prepared for your JSF development needs, we have compiled numerous recipes to help you kick-start your projects. Besides reading them online you may download the eBook in PDF format!
Email address:
Want to be a Java Master ?
Subscribe to our newsletter and download the Advanced Java Guide right now!
In order to help you master the Java programming language, we have compiled a kick-ass guide with all the must-know advanced Java features! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Java Master ?
Subscribe to our newsletter and download the Java Design Patterns right now!
In order to help you master the Java programming language, we have compiled a kick-ass guide with all the must-know Design Patterns for Java! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be a Hadoop Master ?
Subscribe to our newsletter and download the Hadoop Tutorial right now!
In order to help you master Apache Hadoop, we have compiled a kick-ass guide with all the basic concepts of a Hadoop cluster! Besides studying them online you may download the eBook in PDF format!
Email address:
Want to be an Elastic Beanstalk Master ?
Subscribe to our newsletter and download the Amazon Elastic Beanstalk Tutorial right now!
In order to help you master AWS Elastic Beanstalk, we have compiled a kick-ass guide with all the major Elastic Beanstalk features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Amazon Elastic Beanstalk Tutorial
  • Develop your own Amazon Elastic Beanstalk based applications
  • Learn Java Integration and Command Line Interfacing
  • Get your own projects up and running in minimum time
Want to take your Java skills to the next level?
Grab our programming books for FREE!
Here are some of the eBooks you will get:
  • Spring Interview QnA
  • Multithreading & Concurrency QnA
  • JPA Minibook
  • JVM Troubleshooting Guide
  • Advanced Java
  • Java Interview QnA
  • Java Design Patterns
Insiders are already enjoying weekly updates and complimentary whitepapers!
Join them now to gain exclusive access to the latest news in the Java world, as well as insights about Android, Scala, Groovy and other related technologies.
Email address:
Want to be an ActiveMQ Master ?
Subscribe to our newsletter and download the Apache ActiveMQ Cookbook right now!
In order to help you master Apache ActiveMQ JMS, we have compiled a kick-ass guide with all the major ActiveMQ features and use cases! Besides studying them online you may download the eBook in PDF format!
Email address:
Apache ActiveMQ Cookbook
  • Explore Apache ActiveMQ Best Practices
  • Learn ActiveMQ Load Balancing and File Transfer
  • Develop your own Apache ActiveMQ projects