Java

Øredev 2009 – Day 3

I was not present at the conference yesterday, so this is actually my second day here, and that also explains why there were no post from yesterday. Another explanation could have been that I was lazy, but that is not the case this time… 🙂

Well, over to what this post is all about: the conference. The keynote was held by Scott Hanselman. He gave an excellent talk about effectiveness and efficiency. Some really good stuff to bring back from that speech. Will try to list some of the techniques and tools he mentioned in a later blog post.

I will also summarize the rest of the sessions I attended today very soon here…

Great conference!

Øredev 2009 – Day 1

The conference was opened with a keynote by Marc Lesser. He talked about how to accomplish more by doing less. It was a kind of usual opening of a technology oriented conference, but I guess a bit of zen thinking early in the morning can only do us good.

Ola Bini presented the folding language Ioke. I will definitely download this and play around with it. Hopefully, I can use it in some presentation in near future. Really cool and fun!

The next presentation I attended was Neal Ford’s presentation about XP in practice. Nothing really new there, but more a confirmation that what I feel we are doing right applies to others as well. And, more valuable, tips and techniques for how to improve on what we are doing not so right. At last a kind of nerdy way of looking at pair programming:

  • 100 eyes
  • 010 brains
  • 001 mind

Continuing on the agile track, Dan North gave an excellent talk about our obsession with efficiency. The three key points to remember from his talk is:

  • You get what you measure
  • Not all vendors are bad guys
  • Efficiency isn’t effective

Back to the languages track, I attended a talk by Neal Ford where he compared Groovy and JRuby. It gave me a pretty good comparison of the benefits and drawbacks of both languages.

The only session on the Java track was a disappointment. The only thing I really got from this presentation was that I could charge my netbook’s batteries. Still running OpenSolaris on it, by the way, and is generally happy with it!

Last technical presentation today was about clojure. Kind of tough thing to jump into this late in the afternoon, but the presenter, Stuart Halloway, did a great job.

In the afternoon keynote, Cameron Purdy did a comparison of Java and C++.

Overall experience from the first day of the conference is good. It is impressive that they have gathered so many international speakers. If I should pick on something, it has to be that the opening of the conference would benefit from being a little more flashy. Maybe have the opener learn his speech and practice on the English pronunciation…?

And now, it is time for mingle and beer!

One Week With IntelliJ IDEA

A week has gone since JetBrains announced the free and open source IntelliJ IDEA Community Edition.

I have been giving it a try and is actually pretty satisfied with it. Even though I am not as familiar with all the shortcuts as I am with NetBeans, it feels comfortable. It does not differ that much. The only problem I have encountered with the default setup is the shortcut for comment/uncomment code (Shift+/). But this is mainly because I am using Swedish or Norwegian keyboard setup where the / is entered by hitting Shift+7. This was easily fixed by adding Ctrl+Shift+7 as a shortcut combination.

I could not find a live template for test methods, but it was easy to create a new one. Here is a simple example:

public void test$NAME$(){
   $END$
}

I am not sure if I like the way multiple projects are handled. If you work with multiple projects in IDEA, each project is opened in a separate frame. In NetBeans you can choose to have multiple projects open in the same workspace and/or group them in project groups. It is probably just a matter of habits, but I like the flexibility to be able to decide that myself and not be forced to open every new project in a new frame.

To conclude, I really like IDEA Community Edition, an will most probably choose use it when I am working on a project where I am in no direct need of Java EE support in the IDE. Otherwise, NetBeans is still my favorite IDE. Eclipse is still out of the question as long as Maven is involved.

IntelliJ IDEA – Now Free and Open Source

Despite the fact that it comes with a price tag, IntelliJ IDEA from JetBrains has since long been a very popular IDE in the Java community. The news that they now provide a free and open source community version was therefore very welcome.

If you have been reading this blog, you probably know that I am quite a big fan of NetBeans and have written quite a few comments about the areas it excels over Eclipse. I have not really tried IntelliJ IDEA yet, but now the Community Edition has been downloaded and installed. JetBrains has provided a detailed comparison between the Community and Ultimate edition.

First Impression
The first impression is that it is fast. The startup time is significantly faster than NetBeans. The editor is responsive, shortcuts and refactorings just as you expect them to be. It sure is ugly, menus and dialogs looks like some left over AWT student project hack from the 90’s, but who cares. After all we are here to code, not to enjoy the view.

Maven
The next test is to open one of my existing multi-module maven projects. Just as with NetBeans, it is just to select the root pom.xml file and open it. All sub-modules and dependencies are resolved just as expected. It scatters a lot of .ipr, .iwl and .iml files all over the place, but I can live with that as long as it updates them with changes from the pom.xml files.

When I check the Module Settings, it seems like the compiler output is set to /classes and not /target as normally by the maven convention. But when i build the project, it uses the maven configuration and puts the compiled classes under target. Why? Well, as long as it works it is okay with me…

Web and Enterprise
As the comparison table shows, there is no support for any web, mobile or enterprise frameworks in the Community edition. Nor are there support for application servers. You would have to buy the Ultimate edition for this. Fair enough, they have to make money somewhere.

Conclusion
The Community Edition of IntelliJ IDEA is the perfect choice if you are building a simple java application. It lacks support for development using web, mobile or enterprise technologies. If you want an IDE that is comparable to for example Eclipse Gallileo or NetBeans you would have to go for the Ultimate Edition. In my view NetBeans is the better choice.

Disclaimer: I  have only scratched the surface here and will continue explore the Community Edition. My opinions may change as I go…

Some Thoughts in General

I have been kind of lazy writing this blog lately. After keeping it up pretty okay during summer, the pace has now slowed to a minimum. I think it can be partly explained by the fact that I have been using Twitter for some of the stuff I used to write here and that my new HTC Hero Android phone made tweeting more convenient than ever…

My intentions are to use this blog for subjects that cannot easily be said in 140 characters and twitter for the short, more daily stuff…

Well, so what has happened since last time. Since I have solely been using NetBeans the last couple of years for Java development, I decided to give Eclipse Gallileo a chance. It took me an hour of frustration to conclude that it still sucks for Maven based projects. Why it should be so hard is beyond my comprehension! In NetBeans, you just choose open project, selects the pom.xml file and everything is fine. Dependencies are resolved as they are defined in Maven, no stupid .classpath, .project and .settings rubbish created that makes Eclipse to totally hick-up if a dependency is changed.

Apart from my unsuccessful flirt with Eclipse, I have continued development of KanbanFX. It has been converted to a maven project and besided the information on Kenai, I have created a page for it here where you can try it out. Kanban is increasing in popularity, @henrikkniberg had 300 people on his Kanban vs Scrum session at JAOO this week.

KanbanFX

I really like the simplicity in Kanban. It should be enough for most small projects, and especially AO teams. Even though all you really need as tool support is a white-board and a couple of post-it notes, larger organizations often require you to hook into existing tools for requirement management, issue tracking etc.

I have not been able to find any tool fulfilling this need, so I decided to create on myself. Thereby, KanbanFX was born!

KanbanFX is a JavaFX implementation of a Kanban board. Source code and a very limited demo version is available on Kenai:

http://kenai.com/projects/kanbanfx.

Please join the project if you want to contribute. I am pretty sure that I will need help with at least the graphical elements when we get to that…

NetBeans 6.8

NetBeans 6.8 M1 is available for download. According to the roadmap, the final release is scheduled to be released Autumn 2009.

Usually, I am pretty fast installing the absolute latest version, but this time I think I will wait at least form the M2. It has not been that long since the 6.7 and 6.7.1 releases and I am pretty satisfied. The only thing annoying me is Bug 161416. Hopefully it will be fixed in 6.8…

JUnit Max did not survive

I wrote about JUnit Max in a previous post. In that post I commented that I was not sure if people were willing to pay $2/month for it. It turned out that I was right. Kent Beck just announced that he has deadpooled JUnit Max.

It is kind of sad that it seems impossible to sell such a great product, but I guess we have got used to that all tools are free. If I look at myself, I would rather have to pay one-time license fee for it than a $2/month subscription. Too much hassle filing expense reports every month for such a small amount.

That said, I actually never tried it since it was not available for NetBeans. Please remember us NetBeans folks next time! Maybe we are easier to get money from than the Eclipse guys… 😉