Skip to main content

JavaZone report, rest of day 1 and day 2

Updated with hyperlinks

Day 1

Well, I didn't go to Bjørn's presentation anyway for some reason. Some chaos at the stand, and I dropped into the presentation on Matisse. Long story short, this stuff is Visual Studio five years ago, the live demo botched terribly, and I did a walk-out after about 20 minutes. Geertjan explained why in his blog, and it looked like a dependancy management problem. Snap out of it, guys. Ditch Ant and start using Maven. Still, looking at the state of Swing, I'm glad I'm doing web-apps.

Then I took some time off to handle stand-chaos, and eat with Erling (old student buddy) who I haven't met in a while. I was also in the Meet-The-Gurus: MVC framework smackdown with Arjen Poutsma (Interface 21/Spring MVC), Rickard Öberg (creator of WW) and Kaare Nilsen (JSF). Was interesting to see how the MVC frameworks (or web frameworks as I prefer to call them) could be divided into several channels of motivation, and thus is the reason we have so many frameworks:

Performance/customer-friendliness (anti-JSF)
Developer-friendliness (JSF actually)
Container dependent (Struts)
Testability and container independence (WebWork)
Request/response model (Spring MVC)
AJAX compatibility (every framework, although it appears some are more equal than others)
Some others.

I started off being the WW-pusher, but eventually I got bored with that (it's just too easy, isn't it), so I advocated the devil (JSF) instead.

Attended Mads Nissen's SOA-fishbowl/shootout, which was also good fun, and very interesting. My SOA conclusion is that we're spending 90% of our time worrying about something that concern 10% of us. Let the architects worry about SOA, and tell us which service-protocols to use based on their wise decision (as long as they don't decide on anything silly). Give me Mule and JavaSpaces, stay clear of XML-transport and I'll be happy. Was very cool to see my old database professor Naci Akkøk so active in the discussion.

Then it was party zone! Sat around talking to Kjell and Mark about recruitment, JavaZone, life and everything.. Then discussed some scrum with Johannes, and I think I agreed to do a lighting-talk on the next XP-meetup... And then there was a quick beer up in the 21st floor before heading home.

Day 2

Early up the next morning to get the stand ready, then off to some awesome presentations!

I finally got to see Romain Guy's Filthy Rich Clients. Aerith still looks cool, but he also had some demo-troubles without letting that effect the presentation too much. Will have to sub to his blog as soon as Java 6/Mustang is out. Shine up on my old Swing skills, but still I think Java is a horrible language for doing graphic-design. Why not use more of a markup language? Something like JSF, only make it generate pretty glassy swing instead of HTML...

Struck a thought that when we do encounter errors in apps, remember to display user friendly error messages. Make them believe sometbody is actually doing something about the problem. Non-obtrusive, but still informative and helpful. Expect that things will go wrong.

Then I saw Kaare Nilsen's AspectJ presentation. I think I stole his eclipse/aspectJ book when packing up later on. Nuff said, but I really firmly believe that aspects will become as natural a paradigm as OO in the future.

Then I saw Alex Popescu's InfoQ presentation! As an old Magnolia-fan, lots of interesting and impressive stuff going on there! You hang in there, guys. Take-off will come soon, I'm sure!

After that I had to start correcting the JavaQuiz. I have to say people really suck at Java. On the total score of 18, the best guy got 9 points (120 contestants). Shape up guys :)

Then it was Johannes' agile presentation. Very inspiring! It's good to see that someone so high up in the system see the same problems in software engineering as us guys on the floor.

Joshua Block was the most skilled presenter I've seen this 'Zone, with Bruce Tate not far behind. Very entertaining, and some nice pointers on what I have to notice in Java 5.

And that was my last one! Had to mess around with the stand the rest of the day.

Also came up with the title of my presentation next year: How to put the fun back in programming!








Comments

Popular posts from this blog

Open source CMS evaluations

I have now seen three more or less serious open source CMS reviews. First guy to hit the field was Matt Raible ( 1 2 3 4 ), ending up with Drupal , Joomla , Magnolia , OpenCms and MeshCMS being runner-ups. Then there is OpenAdvantage that tries out a handful ( Drupal , Exponent CMS , Lenya , Mambo , and Silva ), including Plone which they use for their own site (funny/annoying that the entire site has no RSS-feeds, nor is it possible to comment on the articles), following Matt's approach by exluding many CMS that seem not to fit the criteria. It is somewhat strange that OpenAdvantage cuts away Magnolia because it "Requires J2EE server; difficult to install and configure; more of a framework than CMS", and proceed to include Apache Lenya in the full evaluation. Magnolia does not require a J2EE server. It runs on Tomcat just like Lenya does (maybe it's an idea to bundle Magnolia with Jetty to make it seem more lightweight). I'm still sure that OpenAdvant...

Encrypting and Decrypting with Spring

I was recently working with protecting some sensitive data in a typical Java application with a database underneath. We convert the data on its way out of the application using Spring Security Crypto Utilities . It "was decided" that we'd be doing AES with a key-length of 256 , and this just happens to be the kind of encryption Spring crypto does out of the box. Sweet! The big aber is that whatever JRE is running the application has to be patched with Oracle's JCE  in order to do 256 bits. It's a fascinating story , the short version being that U.S. companies are restricted from exporting various encryption algorithms to certain countries, and some countries are restricted from importing them. Once I had patched my JRE with the JCE, I found it fascinating how straight forward it was to encrypt and decrypt using the Spring Encryptors. So just for fun at the weekend, I threw together a little desktop app that will encrypt and decrypt stuff for the given password...

The Git Users Mailing List

A year ago or so, I came across the Git-user mailing list (aka. "Git for human beings"). Over the year, I grew a little addicted to helping people out with their Git problems. When the new git-scm.com webpage launched , and the link to the mailing list had disappeared, I was quick to ask them to add it again . I think this mailing list fills an important hole in the Git community between: The Git developer mailing list git@vger.kernel.org  - which I find to be a bit too hard-core and scary for Git newbies. Besides, the Majordomo mailing list system is pretty archaic, and I personally can't stand browsing or searching in the Gmane archives. The IRC channel #git on Freenode, which is a bit out-of-reach for people who never experienced the glory days of IRC. Furthermore, when the channel is busy, it's a big pain to follow any discussion. StackOverflow questions tagged git , these come pretty close, but it's a bit hard to keep an overview of what questio...

Git tools for keeping patches on top of moving upstreams

At work, we maintain patches for some pretty large open source repositories that regularly release new versions, forcing us to update our patches to match. So far, we've been using basic Git operations to transplant our modifications from one major version of the upstream to the next. Every time we make such a transplant, we simply squash together the modifications we made in the previous version, and land it as one big commit into the next version. Those who are used to very stringent keeping of Git history may wrinkle their nose at this, but it is a pragmatic choice. Maintaining modifications on top of the rapidly changing upstream is a lot of work, and so far we haven't had the opportunity to figure out a more clever way to do it. Nor have we really suffered any consequences of not having an easy to read history of our modifications - it's a relatively small amount of patches, after all. With a recent boost in team size, we may have that opportunity. Also the need for be...

Managing dot-files with vcsh and myrepos

Say I want to get my dot-files out on a new computer. Here's what I do: # install vcsh & myrepos via apt/brew/etc vcsh clone https://github.com/tfnico/config-mr.git mr mr update Done! All dot-files are ready to use and in place. No deploy command, no linking up symlinks to the files . No checking/out in my entire home directory as a Git repository. Yet, all my dot-files are neatly kept in fine-grained repositories, and any changes I make are immediately ready to be committed: config-atom.git     -> ~/.atom/* config-mr.git     -> ~/.mrconfig     -> ~/.config/mr/* config-tmuxinator.git       -> ~/.tmuxinator/* config-vim.git     -> ~/.vimrc     -> ~/.vim/* config-bin.git        -> ~/bin/* config-git.git               -> ~/.gitconfig config-tmux.git       -> ~/.tmux.conf     config...