List/Grid Java Subscribe to the RSS feed of category Java

optaplanner-logo

Drools Planner renames to OptaPlanner: Announcing www.optaplanner.org

We’re proud to announce the rename Drools Planner to OptaPlanner starting with version 6.0.0.Beta1. We’re also happy to unveil its new website: www.optaplanner.org. OptaPlanner optimizes business resource usage. Every organiza ...
enterprise-java-logo

JPA and CMT – Why Catching Persistence Exception is Not Enough?

Being in EJB and JPA world using CMT (Container Managed Transactions) is very comfortable. Just define few annotations to demarcate transaction boundary (or use the defaults) and that’s it – no fiddling with manual begin, comm ...
jcg-logo

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 will receive the book prizes are (names are a ...
java-logo

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 EntityManagers. JTA or resource-local EntityMan ...
enterprise-java-logo

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 any interface to expose a business interface. The ...
enterprise-java-logo

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 EJB 3.1 views omitting legacy local, remote a ...
java-logo

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 of my presentation here and our full Paper he ...
java-logo

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 the elements or find different elements mat ...
easymock-logo

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 can be achieved at least with the help of unit ...
java-logo

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. There is some common feature amo ...
Java Code Geeks and all content copyright © 2010-2014, Exelixis Media Ltd | Terms of Use
All trademarks and registered trademarks appearing on Java Code Geeks are the property of their respective owners.
Java is a trademark or registered trademark of Oracle Corporation in the United States and other countries.
Java Code Geeks is not connected to Oracle Corporation and is not sponsored by Oracle Corporation.

Sign up for our Newsletter

15,153 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.

As an extra bonus, by joining you will get our brand new e-books, published by Java Code Geeks and their JCG partners for your reading pleasure! Enter your info and stay on top of things,

  • Fresh trends
  • Cases and examples
  • Research and insights
  • Two complimentary e-books
Get tutored by the Geeks! JCG Academy is a fact... Join Now
Hello. Add your message here.