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Web Services and XML

During the last few weeks, Marc H., Paul S. and myself have been exploring some ideas to support Hypermedia in Jersey. The outcome of this investigation is an experimental implementation that is available in Jersey's trunk (module version 1.2-SNAPSHOT). Exactly what it means to support hypermedia is still an area of research, and some other implementations of JAX-RS (notably RESTfulie) have also...
on Feb 9, 2010

Programming

  Hi, my name is Juliano Viana, I'm a software consultant and developer based in Brazil, and I've been honored with the opportunity to blog in Java.net! Hope I can contribute something to this great community resource. For my first blog post at Java.net I've choosen to write about my web framework of choice, Apache Wicket. A designer and developer friendly framework Wicket is a great web...
on Feb 9, 2010
In this post I am going to sum up things I have learned while creating a fluent API (or internal DSL) in Java. I'll talk about the search API I created for my current position: it's not a toy problem, it's a real problem, which has a significant amount of complexity. Because of that complexity, you get to see techniques and ideas that you don't usually see in toy examples. I am not including the...
on Feb 4, 2010

Web Design

Over the weekend, I was reading Mark Pilgrim's great book on HTML5 - and when I got to the part about the semantic tags, I thought it might be worth a quick mention. In case you've missed out on HTML5 in general (and don't want to take the time to read that book I linked above), the idea behind semantic tags is that many sites use div blocks to mark out the same kinds of content, over and over....
on Feb 8, 2010
Progressive Enhancement is a philosophy of web design - start with simple pages, and build them up based on the capabilities of the browser viewing the page. It’s related to (and in some ways, the opposite of) the idea of Graceful Degradation, starting with a nice, fancy page, and dealing with any browser faults in an elegant manner. Prehaps the simplest example to see this in action is the...
on Feb 7, 2010
 Last week Apple released their latest product destined to change the world (the iPad).  At least that's what they want us to believe.  Perhaps the biggest controversy over the thing is the lack of Flash capability.  However this being java.net I have to wonder out loud, where is Java capability, and more importantly why isn't as much controversy being raised over Java being...
on Feb 3, 2010

Community

For many years I am using XSLT now for a lot of tasks in both, development and runtime environments: Source generation, creating HTML from XML data, or even rendering SVG vector graphics from XML finance data. But what really bothered me was that the XSLT transformer contained in Java (even in Java 6's latest release) was just able to do XSLT 1.0 but not XSLT 2.0. XSLT (and XPath) 2.0 comes with...
on Feb 6, 2010
Here it is the PDF version of my slides @Jfokus 2010, the great Java conference in Sweden. You feedback is always welcome. And if you missed that, here you find my conference wrap-up.    
on Feb 3, 2010
So finally, after endless nights, my new web site Head Crashing Informatics is finished. Learned a lot on XHTML and CSS by coding it completely by hand (yes, really, did not use any design tool, as I love to code and always want to see what's going on behind the scenes). In the future you'll find my latest stuff there, research results, code snippets, background information on my projects, and...
on Jan 29, 2010
I love owls; they are so elegant and have a strong personality (too bad in so many years I've been unable to take photos at any of them!). Unfortunately in my culture (and probably many others) they have also got a bad reputation, as they were considered messengers of bad fortune. It's for this reason that in italian a "gufo" is also a person who, for innate attitude or purportedly,...
on Jan 28, 2010
Is Go a Java replacement?  Of course not, but I do wonder what Google's up to: http://thoughtfulprogrammer.blogspot.com/2010/01/why-go-googles-very-on-programming.html  
on Jan 25, 2010

GUI

Lots of people have opined on Apple's iPad, many deriding it's closed nature and lack of features.  The thing is, those problems don't matter to most people. The iPad isn't for you or me. It's for everyone else. I've spent the last 20 years hoping we would have the technology to build such a device, even though I knew it was a device I would not personally use. But that doesn't matter.. Make...
on Feb 4, 2010
In my famous company innoQ I currently have the opportunity to work on a real cool tool: Bundle-Bee. It claims to be able to take any OSGi bundle and distribute the computational load to an ad-hoc grid (e.g. all machines in an office) without special setup or configuration. We just released version 0.5.3 which is still very restricted and far from feature complete - we don't even...
on Jan 28, 2010

J2EE

GlassFish v3 comes bundled with Metro - a secure, reliable, transactional, and .NET interoperable Web services stack. Metro is compliant with JAX-WS and provides additional quality of service attributes that can be easily enabled using NetBeans IDE. This blog contains a screencast that shows how to create a simple Web service using NetBeans 6.8, implement the business logic by accessing a...
on Feb 2, 2010
Composite components are a great feature of JSF 2.0. The canonical example is a login component with fields for the username and password: <mylib:login name="#{user.name}"      password="#{user.password}"      loginAction="#{user.login}"/> This has been well explained elsewhere....
on Jan 30, 2010
Converged (Http/SIP) applications gives users the flexibility of creating or accessing information about their communications (call/conferences/im ...) over the web. To make this possible a typical converged application would contain an entry point for all the Http requests, which is mostly an Http Servlet. This servlet would return back appropriate responses by accessing the corresponding...
on Jan 25, 2010

Security

I received an email from core Mojarra team member Jim Driscoll, who was inexplicably laid off from Sun after its recent acquisition by Oracle, about a talk at next week’s BlackHat Conference in Arlington, VA, U.S.A.. Jim pointed out that two security luminaries from the elite SpiderLabs team from Trustwave are giving a talk at BlackHat about view state security, specifically focusing on...
on Jan 31, 2010

Web Applications

Yet another week of development is nearly over (at least for me). What was this week all about? Apart from the really low temperatures outside (on Tuesday it was -24C at 4am), I focused mainly on extending the multi-site support in Magnolia. This feature exists for years already. But what it really means in context of Magnolia? In general you can setup the server to run mulptiple domains and you...
on Jan 28, 2010

Tools

I've finally managed to produce the Windows installer for Hudson, as originally raised by Håkan Reis. Please try it out and let me know how it works. This one took much longer than the installer for any other platforms, and while I normally think of Microsoft technologies very highly, Windows installers and WiX are a real disappointment. For example, you write the description of the...
on Jan 26, 2010

Extreme Programming

 Everyone is talking about team work - but what exactly does it entail? Strictly speaking, the word denotes classical work division in which every team member is responsible for a clearly defined section of the entire production process.   We at Micromata have a different view on team work: we want every team member to understand and be interested in their colleagues' areas of...
on Jan 23, 2010