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J2SE

JMath: A Java API for doing Math Hello. I would like to introduce JMath project. JMath is math API for doing serious math with Java. With JMath you can do linear algebra, set calculations, general math calculations such as arithmetics, fractions and the like. Also, with JMath you will be able to do serious statistics. Origin of JMath Origin of JMath is the former LinAlg API....
on Apr 18, 2010

GUI

It’s my great pleasure today to announce the availability of releases of the following projects: Substance look-and-feel version 6.0 (code named Sonoma) Trident animation library version 1.2 (code named Cookie Jar) Laf-Widget library version 5.0 (code named Magnolia) Laf-Plugin library version 1.1 (code named Landshark) Substance plugins for SwingX and Flamingo component suites...
on Apr 14, 2010
Have you ever got into the situation where you feel like you need to stretch the limits of HTTP form processing? Sometimes when developing complex web applications you end up with a form that has just too many features on it. This situation is particularly common when the application uses Ajax forms, as these forms often end up accumulating an enormous amount of funcionality - different actions...
on Mar 30, 2010

J2EE

In this post I will share my recent findings about Container Dependency Injection in Java EE 6, in particular how to decouple the processing threads of  event producers and event consumers. Java EE 6 introduces a very nice dependency injection framework (CDI) that has superb support for the Observer pattern in the form of event broadcasting. An Event in CDI is just a regular POJO: public...
on Apr 14, 2010
In my last blog entry I described the generic user procedures as used in CAFE. These procedures can be used for registration and various parts of presence. In this installment I will go a bit deeper into the presence related user procedures, showing how to publish presence information on behalf of a user and subscribe to presence information. And since presence information in CAFE ...
on Apr 13, 2010
SailFin CAFE, like other converged application development frameworks has changed the converged application development paradigm. Having used CAFE APIs so far, if one thought that application development has never been so fast and so easy, things  just got better with v1 b28. Communications (conversation, conference, imconversation, imconference...) that were created by applications were...
on Apr 12, 2010
A long time without blogging, I have been busy working with DTV applications and GRails... this post goes with the second topic... Have you already installed Spring Security (Acegi) plugin in Grails? Do you want to allow logins with the email also - like Twitter, SlideShare, etc - and not only with the default username? Here is the simple way to make it to work: 1 - Implement an...
on Apr 8, 2010

JSP

I'm excited to show you all one of the things I've been working on since I joined Palm. Palm Hot Apps Today we launched a new microsite called Palm Hot Apps. This is a leader board for our Hot Apps promotion, where the top selling & downloaded apps compete to earn bonuses between $1,000 and $100,000 dollars. Since this is a competition we wanted to have a constantly updated site that shows...
on Apr 12, 2010

Community

There were a few ripples around the Java community given that James Gosling the founding father of Java has left Oracle/Sun. I'm not that surprised, I'm sure many others are not either. Google must have made inquiries on more than one occasion and Sun had a number of painful years even when I was there, plenty of layoffs that made each release more difficult and that was 5 years ago. ...
on Apr 12, 2010
The spring is here at last, and yesterday I was walking on a beach. Often walking on sand beaches recall me the "paradox of the heap": you have a heap of sand, let's say made of a million of sand grains. Then you remove one, and get 999,999 sand grains. No doubt, it's still a heap. Now you repeat the process, and eventually you'll get with a single grain of sand in your hand. No doubt,...
on Apr 11, 2010
I started working for Sun Microsystems since Janurary 2001, when I first came to the US. During these years I was able to work on many different projects, such as MSV, JAXB, JAX-WS, Metro, GlassFish v3, and Hudson, to name a few, with many great people. It was all quite an enjoyable journey. I won't list all those names one by one here, for it will be too long, but if you are one of them, I think...
on Apr 5, 2010
Once again the FUD around Solaris and OpenSolaris fate started to spread after Dana Blankenhorn misunderstood the licensing terms and used a eye catching and visitor increasing title, Oracle taking back OpenSolaris, for his blog entry. Well, from this article we can get that even the veteran writers can get things wrong and spread incorrect news :-) Folks, Solairs is one of the biggest Sun assets...
on Apr 1, 2010

Databases

If you wonder whether the style of use with JDBC API has an impact of performance, you might like to read my latest blog entry on Head Crashing Informatics. While the entry mostly is about tuning SQL Anywhere's BLOB handling performance, it contains an interesting aspect: There are three ways to deal with BLOBs in JDBC, and the performance difference is tremendous. While obvious for the JDBC...
on Apr 10, 2010

Tools

My project of the day (or "POTD") is Custom Access Modifier — an annotation and an enforcer that lets you define application-defined custom access modifiers, So let me explain this a bit more. Say you have a library that people use, and say you are thinking about deprecating one of the methods. Yes, you can just put @Deprecated, but that doesn't actually prevent people from...
on Apr 9, 2010

Programming

Since generics were out and I started using them, there were always a few cases in which I couldn't make them do what I wanted. I always thought it was my problem, and that I didn't understand what was going on... Turns out: it's not. There are at least two things that are implemented in a way that break what I thought were very safe expectations. Inference Before Generics, you would write...
on Apr 9, 2010

Web Services and XML

Recently a user in GlassFish forum asked about developing JAX-WS web service in an OSGi bundle. Here is a complete sample demonstrating a JAX-WS web service invoking an OSGi service via OSGi service registry. You can download it from here. The diagram below hopefully explains the organisation of the sample:   As the above diagram shows, we have three components, viz: 1) osgi-service.jar:...
on Apr 8, 2010
If you are using Ant 1.7.1 for developing Web Services with JAX-WS/JAXB, I suggest you to move to the latest version Ant 1.8.0. JAXB/JAX-WS rely on package level runtime annotations for lot of things. For ex: JAXB relies on the @XmlSchema annotation in package-info.java and uses it for binding Java data types to XML schema types. You might be puzzled to see that the mappings are not as expected....
on Mar 29, 2010

Security

Manage, Administrate and Monitor GlassFish v3 using Application Server Management Extensions (AMX) & The Java Management Extensions (JMX) Management is one of the most crucial parts of an application server set of functionalities. Development of the application which we deploy into the server happens once with minor development iteration during the software lifecycle, but the management is...
on Apr 6, 2010

EJB

I will wrap up my experience at eclipsecon. This was my first time at eclipsecon. Folks who had been here earlier told me that this year there was a lot of topics around eclipse runtime projects – so the focus has shifted from tools to runtime. Overall I liked eclipsecon. My topic, OSGi & Java EE in GlassFish, was also of the same type. The slides of my talk are...
on Mar 30, 2010
Extending GlassFish CLI and Administration Console, Developing the sample Modules Administrators are always looking for a more effective, easier to use, and less time consuming tool to use as the interface sitting between them and what they supposed to administrate and manage. GlassFish provide effective, easy to access and easy to simple to navigate in administration channels which cover all...
on Mar 29, 2010