In his blog Firefox memory usage and memory leak news Jesse Ruderman talks about memory usage and fix memory leak bugs in Firefox 3. For people who know Marmite I’ve been feeling the same with Firefox for the last years (I even used Opera for a long time). I love it for its plugins and extensibility, I hate it for memory and CPU usage (I … Continue reading Waiting for Firefox 3
Very often you can read ” xml descriptors are dead with EJB 3 “. Well, it’s not exactly true. XML descriptors are not dead, they are optional (thank god). But there is still a very good and legitimate use for them when you want to configure an EJB. When you have an attribute in an EJB which value can change at deployment, you don’t want … Continue reading Configure your EJB 3 with envirnoment entries using ENC
More and more customers are using wikis for collaborative work… and universities too. At the Cnam, where I teach, we felt the need of using a wiki. Our department installed MediaWiki last year but the administrator didn‘t set up the rights properly so it was a real nightmare for teachers to have access to the right resources. A couple of month later, nobody was using … Continue reading XWiki tutorial
I’ve published a tutorial on developpez.com about how to setup up and use XWiki for you company. In this tutorial I explain how to install XWiki with Tomcat and MySQL as well as how to use its rich features (such as access rights, users and groups…). This tutorial is written in French and is intitled Créer un site associatif avec XWiki Continue reading Publication of a tutorial about XWiki
Let‘s face it. Exceptions in Java have always been a nightmare because we‘ve never known how to handle them properly. Hundreads of articles and thousands of blogs have tried to help us on “how to use exceptions in Java“. We went from “all exception should be checked“ to “all shoud be unchecked“ and then to “business exception should be checked and technical exceptions unchecked“, “each … Continue reading Container Managed Transaction, EJB 3 and Exceptions
We‘ve been using EJBs for a long time now and, thanks to Java EE 5, it‘s today even easier to do so. What happens when you are comfortable with something ? You forget the basics. And the basics are, J2EE 1.4 or Java EE 5, an EJB runs inside a container. This container can do a lot for you, transactions for example, but you have … Continue reading Container Managed Transaction – Mind the interface
The Java Community Process or JCP, established in 1998, is a formalized process which allows interested parties to be involved in the definition of future versions and features of the Java platform. For a long time it has been closed to big companies, but now it’s opened to individuals. As I am passionate for the Java EE platform, I’ve applied to be a member of … Continue reading I am now an Expert Member of the JCP
I‘ve been an Intellij Idea follower for more than 5 years now. I’ve never really made the move to Eclipse, unless I really have to on rare occasions. Here is another example of how good Idea is. I’ve been developing a little bit with Groovy and recently with Grails. I was sad not to see any Groovy features in the IDE, but things have changed. … Continue reading Intellij Idea is really Groovy
Saturday the 30th of June I’ll be at the book shop Le Monde en Tique in Paris signing copies of my book from 3:30pm to 6pm. Thanks to Jean Demetreau for organizing this event. So, if you want to have a drink, talk about Java EE 5 and even buy a book and get it signed, it’s the right moment, at the right place (the … Continue reading Signing copies of my book
Saturday the 30th of June I‘ll be at the Parisian library Le Monde en Tique signing copies of my book from 3:30pm to 6pm. Thanks to Jean Demetreau for organizing this event. So, if you want to have a drink, talk about Java EE 5 and even buy a book and get it signed, it‘s the right moment, at the right place (the library is … Continue reading Signing copies of my book
On Tuesday the 5th of June from 5pm to 6pm French time, the Journal Du Net is organizing a chat (in French) about the Java EE 5 book I wrote. I’ll be on the other side of the computer answering questions about the content of the book but also Java EE 5 in general. You just have to enroll first if you want to participate. … Continue reading Online chat about the book
Next Tuesday from 5pm to 6pm French time, the Journal Du Net is organizing a chat (in French) about the Java EE 5 book I wrote. I’ll be on the other side of the computer answering questions about the content of the book but also Java EE 5 in general. You just have to enroll and be ready on Tuesday afternoon. See you there. Continue reading Java EE 5 Book Chat
Java Enterprise Edition appeared end of the Nineties and brought to the Java language a robust platform for companies’ enterprise applications. Put into question on each new version, badly understood or misused, competed by open source frameworks, Java EE knew to use these criticisms to improve and find a balance in its version 5. This book proposes to discover the innovations of this new version, and to examine how to assemble them to develop an e-commerce website.
The objective of this book is to guide you in the development of a complete e-commerce website using Java EE 5, while answering the question “how to assemble these specifications? “. The application, inspired from the Java PetStore of Sun, follows the coding and architecture best practices: layers, loose coupling, and enterprise design patterns. Continue reading Java EE 5 BookJava Enterprise Edition est apparu fin des années 90 et a apporté au langage Java une plate-forme robuste pour les applications d’entreprise. Remise en cause à chaque nouvelle version, mal comprise ou mal utilisée, concurrencée par les frameworks open source, elle a su utiliser ces critiques pour s’améliorer et trouver un équilibre dans sa version Java EE 5. Ce livre propose de découvrir les nouveautés de cette nouvelle version, et d’examiner comment les assembler pour développer un site de commerce électronique.
L’objectif de cet ouvrage est de vous guider dans le développement d’un site complet de commerce électronique en Java EE 5, tout en répondant à la question « comment faire pour assembler ces spécifications ? ». L’application, inspirée du Java PetStore de Sun, suit les règles de l’art en matière d’architecture : découpage en couches, couplage lâche, et design patterns d’entreprise….
Continue reading Java EE 5Just to let you know that the book I wrote about Java EE 5 is out. I‘ve blogged before about its content and I’ve also written a presentaion on my web site. The book helps expert Java developers to write an e-commerce website with the lastest Java EE 5 specifications (EJB 3, JPA, JSF, JSP, JMS, JavaMail) running on GlassFish and Derby. The book is … Continue reading Java EE 5 Book is out
At four days of my birthday, my book about Java EE 5 has been published. Even if I wrote it own my own, it is a team effort. And I would like to thank my publisher Eyrolles, my friends who review the book while I was working on it (Zouheir Cadi, David Dewalle, Alexis Midon and Matthieu Riou), the Cnam University where I teach a … Continue reading Publication of the Java EE 5 Book
During the Sun Tech Days 2007 in Paris there was a GlassFish user group conference. There I made a presentation about Java EE 5. Based on my book I explained how a JSP could talk to an EJB 3 using JSF and JPA. Continue reading Java EE 5 at the Sun Tech Days in Paris
I was trying to do a study about the evolution of Java in terms of the langage (how many versions, how many APIs in each version, main features…), its popularity (how many book written in the last 10 years, evolution of the market, job offers in the last 10 years…), its enterprise version (versions of J2EE, how many specifications in each version…)… but I‘m giving … Continue reading Java EE version history: Help Needed !!!
I‘ve just published an article about JAXB 2 on DevX web site. JAXB (Java Architecture for XML Binding) allows you to perform XML-to-Java data binding and generate Java classes from XML schemas and vice-versa. But in this article I mainly focus on marshalling (generate XML from Java objects). You will see how easy it is to generate XML without doing much (thanks to coding by … Continue reading Article: Generate an XML Document from an Object Model with JAXB 2
During the Sun Tech Days2007 in Paris there was a GlassFish user group conference. There I made a presentation about Java EE 5. Based on my book I explained how a JSP could talk to an EJB 3 using JSF and JPA. You will a little more details about the event on my blog.
During this event I met the developpez.com team. For those who don’t know it developpez.com is a very famous french website for developpers. Vincent Brabant interviewed me and Emmanuel Puybaret who wrote a couple of good book about Java and Swing. Continue reading Java EE 5 at the Sun Tech Days in Paris
Just to let you know that I will be presenting my book at the GlassFish Community User Group during the Sun Tech Day in Paris. It will be a quick 15 minutes talk called Learn Java EE 5 on Wednesday the 21th of March around 11 am. I know, 15 minutes is a bit quick to learn Java EE 5, that‘s why you will have … Continue reading Learn Java EE 5 at Sun Tech Day (Paris)
Few weeks ago I blogged about JPA and how I believe it will be the future of ORM. After a first article introducing basic concepts, I wrote a second one for DevX showing how to use JPA to map inheritance, one-to-many, and many-to-many relationships. And also a little bit more of query language (JPQL) to query concrete and abstract classes. Continue reading Article: Persistence Pays Offs: Advanced Mapping with JPA
Few weeks ago I‘ve posted about trying Java Black Belt at the University to test the level of our students. We made 40 students take 3 exams (JSP, Servlet and EJB) and got their feedback. Being French students we had some “I didn‘t understand every questions”. We decided not to take that into account because engineering students should have a good technical English understanding. Some … Continue reading Java Black Belt will be at university
I‘ve been playing a bit with Groovy and I‘ve attended a Grails presentation done by Guillaume Laforge back in January. I thought it was really good and when he mentioned the Grails conference in London I thought “Let’s go! The conference is in May, just during my birthday, I love London, I have plenty of friends there, it would be a good oportunity to know … Continue reading Why is JavaPolis so cheap (or why are IT conferences so expensive)
In the Java EE 5 book, you will have to develop a web and a swing application that talk to an EJB 3 back end. In this Flash animation, you’ll see how to use the Petstore web application. First It browses the catalog of pets, then logs a user on, who buys a few animals, adds them to my shopping cart, changes some quantities of … Continue reading Demo of the Petstore application
