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Hadoop Books Giveaway – Roundup

Fellow geeks, Our giveaway of Packt Publishing’s books on Apache Hadoop has ended. You may find the original post for the competition here. The Prize Winners The 6 lucky winners that ...
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Types of Entity Managers: Application-managed EntityManager

JPA specification defines few types of EntityManagers / Persistence Contexts. We can have:extended and transactional-scoped EntityManagers, container-managed or application-managed ...
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EJB Inheritance is Different From Java Inheritance

Despite the fact that EJB inheritance sometimes uses Java inheritance — they’re not always the same. Just as you could read in my previous post, EJB doesn’t have to implement ...
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Defining EJB 3.1 Views (Local, Remote, No-Interface)

This post will talk about possible ways of defining EJB views using annotations (I’ll just mention about using EJB Deployment Descriptor at the end.) I’ll focus on the most current ...
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Weaknesses in Java Pseudo Random Number Generators (PRNGs)

This will be a sum up of a Paper written by Kai Michaelis, Jörg Schwenk and me, which was  presented at the Cryptographers’ Track at RSA Conference 2013. You can get the slides ...
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Extracting the elements of the Java Collection- The Java 8 way

We all have extensively used Collection classes like List, Map and their derived versions. And each time we used them we had to iterate through them to either find some element or update ...
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JUnit and EasyMock cooperation

Developers always need to take care about code which they produced. They should be ensured that code works properly after a new feature was implemented or some bug was fixed. That’s ...
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Introduction to Functional Interfaces – A concept recreated in Java 8

Any java developer around the world would have used at least one of the following interfaces: java.lang.Runnable, java.awt.event.ActionListener, java.util.Comparator, java.util.concurrent.Callable. ...
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REST with Apache Camel

There are many ways to expose an HTTP endpoint in Camel: jetty, tomcat, servlet, cxfrs and restlet. Two of these components – cxfrs and restlet also support REST semantics just ...
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Indexing data in Solr from disparate sources using Camel

Apache Solr is ‘the popular, blazing fast open source enterprise search platform’ built on top of Lucene. In order to do a search (and find results) there is the initial ...
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