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J2EE

During the JSF lifecycle each input value can be validated. As such the JSF runtime allows you to write validators that will take care of that during request processing. Several standard validators are part of the standard JSF runtime. Note that the specification has been written with extension in mind so it is also possible to write your own validator and hook it up for request processing...
on Sep 1, 2012
While I don't normally blog about the exiting world of JVM command line options, this new 7.0 option, which allows you to rotate to a new GC log file, was just so exciting... err... not so widely published that I decided to share. Of course these options only apply when you've used the -Xloggc: option. The settings are; UseGCLogFileRotation, default value: false NumberOfGCLogsFiles, default value...
on Aug 20, 2012
The shift of focus will have a profound and enduring effect on the way we write programs. Ward Cunningham and Ralph Johnson JSR 339 : VIDEO PRESENTATION MORE ABOUT Early Draft Review 3 JAX-RS 2.0 Early Draft Explained - Java EE 7 Making Progress Jersey 2 in GlassFish 4 - First Java EE 7 Implementation Now Integrated p{ width:96%; font-size:12.4px; margin-left:auto; margin-right:auto...
on Jul 11, 2012
Introduction In my previous blog post, I have asked to many of you this question: "What JSF should become?". And since then, I was quite silent. And the reason behind it is that I was working on a concrete implementation of this vision and my vision is to create a JSF application with a set of UI components that can render themselves on the client side and in this way : @XmlRootElement...
on Apr 10, 2012
Java VM has a standard option called -verbose as shown by java -help:     -verbose[:class|gc|jni]                  enable verbose output To diagnose class loading issues, you need to specify -verbose:class. It's straight forward to use if you are launching the Java process yourself. How does a...
on Feb 23, 2012
GlassFish 4 will be the JAVA EE 7 reference implementation. This new version is to be released on Q3, 2012 but promoted builds can already be downloaded : http://dlc.sun.com.edgesuite.net/glassfish/4.0/promoted/. The main idea of this future release is to provide GlassFish as a PAAS solution. GlassFish 4 will be shipped with a new component called PAAS console. This component is a GUI that...
on Dec 8, 2011

Open Source

OSCON Friday July 20, 2012 live streaming Speaker Slides and Video Table of Contents 1 10am Declarative web data visualization using ClojureScript 2 11am Client/Server Apps with HTML5 and Java 3 11:50am Hacking JavaFX with Groovy, Clojure, Scala, and Visage 1 10am Declarative web data visualization using ClojureScript Kevin Lynagh What is Visualization? EdgeBio : bioinformatics...
on Jul 20, 2012
OSCON Thursday July 19, 2012 live streaming Table of Contents 1 9:00am OSI - Simon Phipps 2 9:05am Making Magic From Cloud To Client - Mark R. Shuttleworth (Canonical Ltd.) 3 9:30am Open Source: A Recipe For Success - John Mone (Endurance International Group) 4 9:45am An Interview with Gianugo Rabellino (Microsoft) - Edd Dumbill (O'Reilly Media, Inc. ) 5 9:55am Disrupting Hardware: The Next...
on Jul 19, 2012
OSCON Wednesday July 18, 2012 live streaming Table of Contents 1 9:05am The Learning Map : Danny Hillis (Applied Minds, LLC) 2 9:20am The Mudslide Hypothesis of Science : Kaitlin Thaney (Digital Science) 3 9:35am Scaling OpenStack Technology. Lessons From The Field : Brian Aker (HP) 4 9:50am The Clothesline Paradox and the Sharing Economy : Tim O'Reilly (O'Reilly Media, Inc.) 5 The Java EE...
on Jul 18, 2012
OSCON Tuesday July 17, 2012 live streaming Table of Contents 1 9:00am CSS: Go from Good to Great 2 1:30pm Build Social and Personal Data Apps using the Open Source Singly Platform 3 6:00pm Exhibit Hall 4 8:00pm Party at Puppet Labs 1 9:00am CSS: Go from Good to Great Estelle Weyl http://www.standardista.com/ http://estelle.github.com/oscon2012/ http://estelle.github.com/...
on Jul 17, 2012
OSCON Monday July 16, 2012 live streaming Table of Contents 1 9:00am Building applications with MongoDB: An introduction 2 1:30pm Getting Started with OpenStack 3 1:30pm Scala Koans 1 9:00am Building applications with MongoDB: An introduction Steve Francia slides: http://www.slideshare.net/spf13/oscon-2012 excerpts: IDEAL horizontal scaling cloud compatible, commodity...
on Jul 17, 2012

Community

JCertif 2012 Call for Papers Now Open -- http://www.jcertif.com! As some of you already know. The next edition of JCertif is coming and will take place on September 03th-09th in Brazzaville, Congo. If you have an interesting presentation idea, we want to hear from you! We invite you to share your Java experiences with the industry and community by submitting a proposal for this far from the «...
on Jun 6, 2012
Hello there! I'm Alessandro Gentile and this is my brand new blog on java.net. I must say, I'm honored to be part of this community. Two months ago I joined the GlassFish project and I began to write tutorials. There are several reasons for my choice and among them there's the love for open source software and java EE. Markus Eisele in his blog two weeks ago wrote an article that I found truly...
on Apr 15, 2012

Web Applications

Introduction Server-Sent Events (SSE) is a standard describing how servers can initiate data transmission towards clients once an initial client connection has been established. It is commonly used to send message updates or continuous data streams to a browser client and designed to enhance native, cross-browser streaming through a JavaScript API called EventSource, through which a client...
on Apr 21, 2012

Servlets

Server-Sent Events (SSE) is part of HTML5 specifications that can be used to push notifications from a server on a HTTP connection. A developer can implement it on top of a servlet but he has to know the details of wire format. We added bit of abstraction so that a developer doesn't have to deal with the wire level details and can work on actual application. The heart of the abstraction is a...
on Apr 20, 2012

Testing

This blog lists the tips, tricks and answers to some of the commonly asked questions on Embedded GlassFish. This list is not sorted in any order. As I recalled I just listed them out here, and will add more as I come across more tips n tricks. Which version of Maven is supported by Embedded GlassFish Maven Plugin? org.glassfish:maven-embedded-glassfish-plugin supports Maven 2 and Maven 3 (4.0-...
on Mar 19, 2012
This blog describes how to configure org.glassfish:maven-embedded-glassfish-plugin for deploying more than one application. There was a community request for this. Refer: http://java.net/projects/glassfish/lists/users/archive/2012-02/message/382 http://stackoverflow.com/questions/9280413/maven-embedded-glassfish-plugin-deploying-2-applications The following pom.xml snippet shows how to configure...
on Mar 18, 2012

Databases

Sometimes we use caches for speeding up by alleviating database load. And the Memcached is the bestknown in-memory key-value store(cache). For using Memcached, you need clients and many clients already exist. You can also find Memcached clients based on Java. Though there are already good Memcached clients which have optimized Memcached operations a long time, I would like to introduce...
on Mar 2, 2012

Blogging

This page is for introducing Grizzly-Thrift server/client modules and sharing various benchmarking results. Object serialization/deserialization of Java comes expensive. For improving this lack, we sometimes used to use other frameworks for RPC such as Protobuf and Thrift which support various programming languages, RPC and own data structures. Especilally, Thrift has already provided various...
on Dec 21, 2011

Web Development Tools

The second edition of Java Magazine (November/December) will go out in few days. In the Part 2 of the my article, you will see in detail how to use JSON to handle the response returned to the HTML5 client. The first Part 1 of my article published in the first edition of Java Magazine (available here http://tinyurl.com/65jos8n) has shown how you can create and deploy quickly a Java EE...
on Nov 13, 2011