tag:blogger.com,1999:blog-57537486286495086822010-02-04T00:21:27.645+01:00Yet another technology blog about things that bug our minds.Bloggarennoreply@blogger.comBlogger28125tag:blogger.com,1999:blog-5753748628649508682.post-23056272057656165522010-01-28T20:10:00.000+01:002010-01-28T20:10:47.699+01:00

Great news my fellow Java-coders, Oracle announced that there will be a JavaOne 2010 after all. However, don't start packing your bags quite yet. JavaOne will be part of Oracle's yearly Oracle World/Develop conferences and thus it won't be in spring as we've gotten used to but will be rescheduled to September 19-23 of this year.

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-56805402649924414082009-10-15T23:26:00.000+02:002009-10-15T23:26:16.869+02:00

Great news! It seems that IntelliJ IDEA 9.0 with an extended list of features is just around the corner; however, the greatest news of them all is that Jetbrains will be releasing IDEA as open source! Amongst the new features which will come in handy (at least for me) are: Support for Java EE 6 Support for Java SE 7 An improved Griffon/Grails plugin Android development-support For an extensive

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-19001441497420351952009-06-08T17:32:00.000+02:002009-07-20T20:10:25.586+02:00

This isn't big news, really. Still, I'd like to share my latest accomplishment. As of today I may call myself Sun Certified Enterprise Architect for Java EE 5.In fact, it's quite funny that I actually feel a little proud of myself... after all, I've real-world experience being an Architect for fairly complex mission-critical applications.Anyway, despite the proven fact that certifications do have

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-12232530328431064052009-06-04T20:57:00.004+02:002009-06-04T21:09:11.179+02:00

Bake a cake, take out the forks, brew a cup of coffee and light some candles! This month we are celebrating the 40th birthday of the UNIX operating system as well as the 50th birthday of the COBOL programming language.These two technologies affected the business world like few others did and to this very day we are still relying on Unix (and Unix-like) installations for our business critical

Bloggarennoreply@blogger.com2tag:blogger.com,1999:blog-5753748628649508682.post-72640732425066928072009-04-30T16:34:00.004+02:002009-04-30T17:12:49.441+02:00

I do realize that the continuous stream of Oracle+Sun articles might bore you, however, I feel that I have to add my 2 cents to the subject as the last couple of weeks have been fairly interesting in my professional life.It started out when one of my former colleagues asked me to check a popular Swedish page on IT. The first article on the page put me in shock: "Oracle buying Sun", it said in

Bloggarennoreply@blogger.com2tag:blogger.com,1999:blog-5753748628649508682.post-88707366350477196252009-03-11T20:43:00.012+01:002009-06-12T10:05:39.113+02:00

Recently I was asked by a client of mine how they would go about to propagate a JAAS Principle from one layer of their Java EE application to the next. Basically, the problem they had was that they needed to get some information about the logged on user from the Web Layer to the EJB Layer. Initially I was surprised because I thought that it is rather self-explanatory... apparently, if you haven't

Bloggarennoreply@blogger.com1tag:blogger.com,1999:blog-5753748628649508682.post-48366252562691461332009-02-22T16:33:00.005+01:002009-06-12T10:02:09.573+02:00

It's been a number of years ago that I contributed to some open source project. To be more accurate, it was some four years ago that I submitted some bug fixes and features to OpenSymphony's WebWork 2 (which is now known as Struts 2.0).After all these years I once again modified an open source project to do something I needed, and this time it was Maven's EAR Plug-in.On release of version 2.3.2,

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-13307486869800311272009-02-09T14:10:00.008+01:002009-06-12T10:00:58.832+02:00

Since Java 1.6 a number of libraries come piggybacking with the JDK installation. These are namely JAXB and JAX-WS, amongst others. Great in a way, however, if you previously built your project with Maven on Java 1.5, you may get worrying runtime exceptions when executing the build artifacts.If you, just like me, ran into these obvious class path problems you will have to tell Maven to endorse

Bloggarennoreply@blogger.com3tag:blogger.com,1999:blog-5753748628649508682.post-90680524949750827812009-01-13T22:55:00.007+01:002009-02-16T23:46:13.622+01:00

Today I ran into some trouble getting Artifactory 2.0 (a great repository service for Maven) to work on JBoss AS 4.2 (and EAP 4.3, for that matter). After some investigation the root cause of the problem was Apache Derby which comes packaged with Artifactory. It starts a JMX Management Server which conflicts with JBoss and depending on what platform and version you try to run it on you get

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-28936475085005810212008-12-24T13:10:00.001+01:002009-01-02T13:14:45.091+01:00

Honestly, I thought I'd manage to release another article in December, however, this hasn't happened. Anyway, I want to wish all my readers happy holidazs and a - despite recession and financial crisis - a prosperous 2009!A couple of articles which I started to write and which you will be able to read in 2009 are about OpenID, .NET and J2EE interoperability as well as building your own process

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-18408592525742416062008-12-05T20:37:00.007+01:002008-12-06T14:35:08.694+01:00

After waiting for such a long time Red Hat's JBoss division has finally released the JBoss Application Server 5.0 and for me personally, it's a feeling of better late than never.While you are downloading Red Hat's newest baby, you may want to know what's new and hot in the 5.0-release...First of all, Red Hat provides an updated JMX console and shortly there should be an update for their embedded

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-38409443829702689722008-11-06T08:17:00.004+01:002008-11-07T08:48:32.745+01:00

Running out of heap is never fun, and as applications grow, both in terms of usage and size, this has become a problem for many companies hosting big applications. A number of years ago, when EM64T/AMD64/x86-64 (or whatever you want to call it)-capable servers entered the ring, the most common way to overcome the 1,n to 2,n GB limit (depending on the OS) of the 32bit JVM was to install a 64bit

Bloggarennoreply@blogger.com1tag:blogger.com,1999:blog-5753748628649508682.post-44280748693630356082008-10-16T22:46:00.003+02:002008-10-16T23:07:03.967+02:00

Great news! The long awaited Java SE 1.6u10 has finally been released.Besides a long list of bug fixes, this new version also sets the stage for JavaFX by making Java modular. Users don't need to download the entire JRE, instead, only the modules needed for your Applet (i.e. a JavaFX RIA), will be downloaded. Should any of the Java applications executed on the user's machine need additional

Bloggarennoreply@blogger.com2tag:blogger.com,1999:blog-5753748628649508682.post-65314656678416757162008-10-07T16:02:00.014+02:002008-10-14T12:01:11.168+02:00

As you all probably know, reliable and correct monetary and scientific calculations in Java aren't as easy as it may seem. Many Java newbies and in some cases even intermediate Java developers, frequently use the data type double for monetary calculations. What's worse, for scientific applications there is no support worth mentoining, at all.Now, if you build a small scale web page, you may never

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-65923867742003467542008-09-14T07:21:00.002+02:002008-09-14T08:18:50.457+02:00

Today I want to share my thoughts about the upcoming Java EE 6, or more specifically, one part of the JSR-316: Profiles.Up to this day we've gotten used to the fact that if we are using a J2EE/JEE-compliant server, we can also use the features Java EE provides. In the future, this is not so clear-cut. You may find yourself coding a Java EE-app and realize too late that you accidentally slipped in

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-47481950516933197302008-08-21T20:15:00.003+02:002008-08-21T20:21:37.666+02:00

Last month I attended The Server Side Symposium in Prague. After listening to Ted Neward's session titled The Busy Java Developer's Guide To Scala I got inspired to produce a similar presentation on Groovy.After writing a couple of slides, something struck me: "Could Ted Neward already have done this?" Thus, I checked Google and I was pleasantly surprised to find that indeed, he did!If you want

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-13613675674997335212008-07-29T17:05:00.007+02:002008-07-30T10:31:41.973+02:00

If you use Linux and happen to use KDE as your window manager, you may be excited to hear that KDE 4.1 has finally been released.And if you run Kubuntu, you can already upgrade to KDE 4.1 by performing these simple steps:Type sudo vim /etc/apt/sources.listAdd the line deb http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu hardy mainSave and exit (:wq! ... just in case you are not a "vimmer")

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-21005601321195733142008-07-27T14:54:00.006+02:002008-07-29T10:00:37.748+02:00

Now that headline probably caught your attention. Nevertheless, the content is not quite as exciting, but it's nonetheless a funny and somewhat ironic observation that I made and that I want to share with you.A couple of days ago I watched a webcast from the Google I/O developer days where Aaron Boodman from Google talked about standards and HTML 5.0 in Google Gears.After watching it, I decided

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-20282651814171396882008-07-27T11:22:00.006+02:002008-07-29T10:01:43.965+02:00

JavaFX is not even released, yet, you can find numerous articles on the internet which give the impression that people all around are already digging its grave before it’s even born.Personally, I very much wonder why… Sun Microsystems is doing a serious attempt to revive Java on the Desktop as well as giving the whole RIA-hype a go. Most articles I’ve read say: “who wants to install the Java

Bloggarennoreply@blogger.com3tag:blogger.com,1999:blog-5753748628649508682.post-77047769689066704792008-07-20T12:08:00.006+02:002008-07-29T11:02:39.001+02:00

Now I know, it's been quite some time since the last time I posted an article on my blog... Between being very busy with my projects at work, taking care of my lady and attending The Server Side Symposium in Prague, I finally finished my SCJD certification assignment (which I have been too busy to do for the last two years).Last time I wrote about the automatic entity change tracking and I would

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-91369392061516236932008-07-01T23:09:00.003+02:002008-07-29T10:54:29.350+02:00

You probably wonder why this blog has not seen much activity during the recent weeks. As it so happens I am finally trying to use my voucher for the SCJD exam which I enrolled for two whole years ago.While doing it, a thought struck my mind: What are the benefits to me, to get a bunch of certifications?Personally, I sacrificed lot's of free time getting a fair amount of certifications. I am the

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-36504453100013172082008-04-14T21:08:00.010+02:002008-07-29T10:04:52.722+02:00

Today I'm going to look at another very common design issue found in practically all enterprise application that I've ever worked on. I am referring to the issue of tracing changes to data by setting the common created/created_by/changed/changed_by-columns in the database.As most other repetitive tasks, the audit logging can be automated and the great thing is: I'll show you how!We get started by

Bloggarennoreply@blogger.com2tag:blogger.com,1999:blog-5753748628649508682.post-89305098460302440762008-03-28T04:58:00.010+01:002008-07-29T11:01:43.280+02:00

In today's post I will describe a pattern which I used in two projects so far and right now I don't really see a reason why I shouldn't use it again, I call it Generic EAO pattern. In fact, it's a merger of two patterns, namely the Generic DAO pattern which one of my former co-workers presented to me a couple of years ago and which he subsequently published on developerWorks. The other pattern is

Bloggarennoreply@blogger.com3tag:blogger.com,1999:blog-5753748628649508682.post-39370542997291486382008-03-24T23:52:00.002+01:002008-07-29T10:55:33.465+02:00

I must admit, for years I've had a love-hate relationship with IntelliJ IDEA and despite IDEA giving me plenty of headaches throughout the years I've always returned for it's (imho) superior code editor. Working as a consultant, though, you don't always have a choice and sometimes you are required to use Eclipse or (very rarely) Netbeans.Looking at pre-6.0 versions of Netbeans, I've always felt

Bloggarennoreply@blogger.com0tag:blogger.com,1999:blog-5753748628649508682.post-7614145000512155652008-03-16T18:22:00.000+01:002008-03-28T03:42:37.910+01:00

If you've been in touch with JPA for a while you've probably encountered a number of limitations which may annoy you a little bit if you've used Hibernate before. One of those limitations is the lack of type conversion (something known as user-defined types in Hibernate) and I am trying to address it in this post.The simplest example I can currently think of involves booleans and the lack of them

Bloggarennoreply@blogger.com3