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Java One, Day One

4 replies on 1 page. Most recent reply: May 14, 2007 2:33 AM by Vincent O'Sullivan

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Bruce Eckel

Posts: 875
Nickname: beckel
Registered: Jun, 2003

Java One, Day One (View in Weblogs)
Posted: May 9, 2007 11:22 AM
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The deal for my press pass was that I am to blog daily about Java One. Which I consider a fair exchange, and sometimes I appreciate having a little (not too big) fire lit under me to write.

First, tonight I'll be giving a special presentation at the Metreon (just behind the Moscone Center where Java One is held) with James Ward about Flex and Java, followed by beer, food and games. James and I are doing our best to make the presentation short and entertaining (as well as thought provoking), so come by the Adobe booth for an invitation.

I only attend Java One periodically, and I'm starting to wonder if I've ever actually attended a session. There are always these big lines to get in, which tend to scare me off because -- especially after doing open spaces events -- I know they're going to turn the lights down and a little tiny person in the front of the room is going to start droning and that tends to put me right to sleep. I actually appreciate the sleep, but I would also like to understand the topic. I'm not alone in this; I talked to several other people yesterday who have the exact same experience. Perhaps it's a conditioned response from being read bedtime stories.

When it was the only way we did things, I put up with it because I didn't know any better. But when you know that you could be having a different experience -- an open spaces session where you are so engaged and energized that sleep is inconceivable -- then the knowledge that the sessions are being recorded and that you can watch them in the comfort of your own chair and office makes me seek out more stimulating interactions. However, I heard last night that my press pass allows me to get into a special fast track to special seating, so I may be tempted to try that today.

Last night was the JavaPosse BOF, which had a nice turnout and produced what will be a very entertaining and informative podcast episode ( Many Roundup attendees spontaneously sat together and burst into the theme song at the appropriate moment (whether this survives into the actual cast remains to be seen). Afterwards we trooped off and completely swamped one of the local bars.

More than one Roundup attendee that I've encountered at Java One -- and it's like a breath of fresh air when it happens -- has said they would orders-of-magnitude rather be going to another Roundup than attending Java One. The concensus was that the Roundup is energizing; Java One is mostly just exhausting. On the way out, I ran into my "editor" at Pearson (parent company for publishers like Addison-Wesley and Prentice-Hall) -- the quotes because we are not and have not actually edited anything together, but he's my official person (Greg Doench, of some fame in editing circles). Greg said that in the line to get on the plane in Newark, he overheard a couple of guys who were obviously coming to Java One talking about the Roundup, and how fascinating the recorded sessions have been, and how one of them wants to come next year; he seemed to be slowly convincing the other one.

(You can see the schedule of upcoming openspace events here).


Redmonk is like a Gartner Group for open source software. Gartner has always made me suspicious because their studies seem to favor whoever is paying for them, much like studies commissioned by pharmaceutical companies which always happen to come to the conclusion that the pharmaceutical of interest is wonderful. Based on an episode of South Park where the boys decide to become talent agents and the size of the fountain in the lobby is paramount, I asked the Redmonk boys about the size of their fountain, and they replied that they had none. Even better, they work primarily out of their home offices, which befits open-source advocates. You only pay for direct consulting and if you use their writing in your promotion. You can link to them for free, and they don't do white papers. All in all I was impressed, and will pay attention to what they say in the future, because they really do seem to give straight information. It's another situation where the lack of funds in open source makes it easier to choose a solution.


The folks who created the BlueJ environment to help people learn programming discovered that it only seemed to work for someone who already knew they wanted to know about programming. For the unmotivated, clarifying and simplifying the process of understanding objects didn't get much traction.

So they looked around and saw the obvious: kids love games. Computer games bring in more money than Hollywood movies. Lots of different motivations there. If you tell a kid they can make a game, they're suddenly interested in how, and all the technology becomes a means to a desirable end. That's what Greenfoot is all about. It's a free (albeit not open-source) framework that allows you to build graphical games in an object-oriented fashion. From knowing nothing about programming, kids can create a game with collison-detection and interaction in a couple of hours. They've even got a push-button system to upload it to their web site to participate in a competition. On the site, you can just fire up an applet to play the game.

There are lots of pre-created graphics for icon images, so it's very easy to get wildly creative. This would also be an excellent framework for simulation. The actual code that you write strips away most of the Java noise so you are focused on the things that actually have an effect on your game.

For years I've thought that this would be the ideal motivator for kids to learn programming, and these folks have done it. The only complaint that I have about the framework is the use of the term "actor." Greenfoot's "actors" are just objects with an act() method. The framework just calls these act() methods periodically, basically a very simple coroutine system. I would strongly prefer that budding programmers not be mis-taught the meaning of actor in this way, so some other term should be invented for Greenfoot (a proper actor uses a message queue and a worker thread for each object, that processes incoming messages one-by-one and eliminates concurrency problems normally associated with threading). But other than that, big kudos to Greenfoot for building a system that will stimulate beginners into learning programming. This system has been long overdue in our world. (Greenfoot is from the University of Kent, Deakin University, and is supported by Sun).

John Cowan

Posts: 36
Nickname: johnwcowan
Registered: Jul, 2006

Re: Java One, Day One Posted: May 9, 2007 2:49 PM
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I think the sleepiness has a lot to do with being in the dark. Until the late 19th century, live presentations were given (perforce) by daylight, and people were much less likely to doze off in them. Turning down the house lights is necessary when you are showing slides (late 19th) or movies (early 20th), but not for live presentations.

Dianne Marsh

Posts: 9
Nickname: dianne
Registered: Mar, 2007

Re: Java One, Day One Posted: May 10, 2007 8:54 AM
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Can't wait to hear the Posse podcast from the BOF! Spontaneous singing by Roundup attendees? Interesting. I'm betting there was some pre-event socializing?

You warned me about open spaces events at my first one. You warned me that they were addicting. You warned me that I wouldn't want to go back to the old way. The one thing I miss about not being at JavaOne is the people. Not the sessions, but the engaging conversations that "happen". Well, and of course, the Java Posse BOF.

I'll be at Roundup 2008, of course. I may have to reserve the time now, but I'll be there. Sounds like it may sell out early! People talking about it in line (wait, "on" line) at Newark, too funny!

Greenfoot sounds cool and I'll have to check that out. I'm really interested in Alice too, and how that might interest girls more than more traditional games. Fun stuff!

-- Dianne

Parag Shah

Posts: 24
Nickname: parags
Registered: Mar, 2003

Re: Java One, Day One Posted: May 12, 2007 7:50 AM
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Hey Bruce,

I agree, open space events are much more engaging and bring about better results.

I remember reading on your wesite that you were trying to use the open space concept for training workshops (or maybe a modified open space concept). I am really curious to know your experience with open space and training. I personally think that the concept will encourage participants to participate and learn much more than they would in traditional workshops.


Vincent O'Sullivan

Posts: 724
Nickname: vincent
Registered: Nov, 2002

Re: Java One, Day One Posted: May 14, 2007 2:33 AM
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> Gartner has always made me suspicious because
> their studies seem to favor whoever is paying for them,
> much like studies commissioned by pharmaceutical companies
> which always happen to come to the conclusion that the
> pharmaceutical of interest is wonderful.

I agree. It really difficult to have confidence in an article that appears to be neutral, when you discover that either: the authors are being paid by one of the parties involved to promote one of the products or; worse still, the article contains subtle (and not-so-subtle) references to products being sold by the authors in preference to what is actually being reviewed.

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