Last night was the final get-together to discuss the Java 8 MOOC. Any event hosted in August in a city that is regularly over 40°C is going to face challenges, so it was great that we had attendees from earlier sessions plus new people too.
As I mentioned last week, the Sevilla Java User Group is working towards completing the Java 8 MOOC on lambdas and streams. We're running three sessions to share knowledge between people who are doing the course.
The Sevilla Java User Group is working together towards completing the Java 8 MOOC on lambdas and streams. As part of this, we're running three sessions during the course so we can, as a group, ask questions about the lectures, get help with the homework, and (if we're feeling very smart!) help people who may be struggling (or might not have watched the videos).
While I was at QCon New York (probably my business conference this year!) I was interviewed by Ralph Winzinger for InfoQ. It felt like a short interview at the time, but we covered a lot of ground - Java 8, Java vs other JVM languages, the effectiveness of the JCP, and the future of Java.
Video and the transcript are available on InfoQ.
I was asked three simple questions about my thoughts on Java turning 20, and ended up writing a guest post for Voxxed. No wonder I can’t seem to find the time to write these days.
I think living in a beautiful city in a fantastic climate has its advantages. Not just the obvious ones, but we find people unusually keen to come and visit us on the pretence of presenting at the Sevilla Java User Group (and please, DO come and present at our JUG, we love visitors).
This week we were really lucky, we had Georges Saab and Aurelio Garcia-Ribeyro giving us an update on where Java is now and where it looks like it's going in the future.
We've been missing an introduction to using MongoDB from Java for a little while now - there's plenty of information in the documentation, but we were lacking a step-by-step guide to getting started as a Java developer.
I sought to rectify this with a couple of blog posts for the MongoDB official blog: the first, an introduction to using MongoDB from Java, including a non-comprehensive list of some of the libraries you can use; the second, an introductory guide to simple CRUD operations using the Java driver:
Last night at the Sevilla JUG we officially celebrated the launch of Java 8 - yay!
Don't be fooled by the picture, people had more fun than it looks. Honest.
For anyone who missed the session, or who was there and wants access to the materials, here they are:
Last Saturday Mr Stephen Chin came to Sevilla on his crazy European tour to show us Lego and Robots. This was our largest turnout yet for a Java User Group event in Sevilla, which surprised me as it was on a weekend, and the weekend before the spectacle that is Semana Santa in Sevilla.
Web development has changed a lot.
I was aware that there have been many changes in the last few years, and I’ve seen maturity come to web platforms in the form of standardisation and common reusable libraries and frameworks - and I don’t mean reusable in the way we used to “reuse” stuff by nicking it off other people’s websites when we saw something cool.
So this blog post is going to chart the progress of web development through my own experience. Of course, this doesn’t by any means cover the whole spectrum, but I think my experience has been not unusual for a Java programming working through the noughties.
Over the course of my career I moved further away from the UI, because certainly early on the money and status was in “back end”, whatever that means, and not “front end”. Which is ridiculous, really, especially as back then you couldn’t really follow best practices and clean code and test first and all that awesome stuff when doing front end development because none of the browsers played by the rules and frankly if you got it working at all you were a bloody genius. And that’s not even considering the fact that as a “front end” developer you should be thinking about actual real human beings who use your product, and actual real human beings are messy things and understanding them is not (we’re told) traditionally a domain that we developers are naturally proficient in.
Anyway, I digress. This was supposed to be a history lesson. Or a nostalgia trip. Or possibly Ranty Trish waving her walking stick in the air and shouting “You kids don’t know how good you’ve got it these days”. If nothing else, I hope that it makes other “back end” developers like myself appreciate how much things have moved on.
Actually I haven’t even mentioned that we were creating these websites to stay in touch with each other. We’d discovered guest books, and used them to write comments and share stories since we’d all moved out of our home town to go to different universities. Man, why didn’t I invent Facebook back then? That’s what we needed.
The next project was a very ambitious one - be the first car manufacturer to sell new cars on the web. Ford was well ahead of their time - the millennium bug had not killed us all, but people were barely buying books online, never mind spending tens of thousands of pounds on a car they’d never driven. But it wasn’t just ahead of its time from a business point of view, technically it was very advanced too - we used lots of “DHTML” (as we were now calling it), a new-fangled technology called ASP, and we were writing modular, reusable COMponents. We used XSLT to parse the XML from the COM objects, and the ASP figured out whether you were Netscape or Internet Explorer (Firefox wasn’t even a gleam in the inventor’s eye, and forget Chrome, I think we using Alta Vista (whaaaat? AltaVista got bought by Yahoo??) not some new-fangled search engine beginning with G) so it could use the right XSLT to turn the XML into HTML that was readable by the browser you were using. My job was to get the DHTML pages rendering and animating correctly in both IE4 and Netscape 4. That was a lot of fun for me, but also very challenging. And imagine my shock when a few months later I tested the site from the university UNIX machines to find that Netscape rendered it completely differently under UNIX. I learnt a lesson about how important it was to test on different platforms.
We had some smart Microsoft people helping us out with this project, and, because it was 2000 and the dot com crash hadn’t happened just yet, we also had a lot of young, overpaid, overconfident contractors who believed anything was possible. I learnt a lot during this time, not just about the technology, but also about different approaches to shaping your IT career. And about how much you could earn before you were 25. I was definitely going to be a programmer when I left university the next year.
Yeah, so... I graduated in 2001. If you were around then, you’ll remember that getting a job was a bit more difficult than I had anticipated, especially as these young, overpaid contractors were now desperately grabbing anything they could find. But that’s a story for another day.
I didn’t go back to Ford straight away, I’d “been there and done that”. I worked on the website for Common Purpose. On the first day, they sat me down with a book on JSP and Servlets, and that was my reading material for the next few weeks. If I’d been fresh out of university where we’d been doing Applets, and where I’d written a Swing app on the side for my Dad’s school, this would have been a big mindset change for me. But having worked on the ASPs it wasn’t such a big shift. I did, however, like how JSPs and servlets made the separation between the view and all-of-the-other-logic-stuff a bit clearer - back in ASP-land we’d settled on a convention of dealing with the form data from the previous page in the first part of the ASP, and rendering the new page in the second part. To this day I still don’t know what we should have been doing instead. But in JSP-land it only took me... I dunno, about 6 months I think, to get the website up and running. The most difficult section was registrations. And yes, I was a graduate, and yes, I was new, but that was a good turnaround for a web application “in those days”.
In my spare time I used what I’d learnt on the blews website. I even had a section where people could log in and comment on photos - we had whole conversations on this website. It was a way for me and my friends to stay in touch. If I’d cracked the photo-uploading instead of it being a manual process for me, I would have invented Facebook. If only I’d known....
The work dried up and there was nothing else for a graduate in the early noughties, so I went back to Ford. My first role back I picked the same technologies we’d been using before - XML, XSLT, only this time we were using JSPs instead of ASP. Our project had a very tight budget and we’d worked out that using open source Java technologies and running the application on one of the many UNIX machines lying around the place was a lot cheaper than the Microsoft solution. I think we were the first team in Ford Europe to pick Java at a time when the recommended approach was Microsoft. We delivered on time and under budget, and Java was the way forward for the department from then on. But on this project I met a guy who would impact my career probably more than he even realises, a guy I’d work with again later. He told me that in Java we no longer used Vector by default, but ArrayList (whaaat? What’s an ArrayList? I had no idea what the differences were between Java 1.1, which we’d learnt at university, and Java 1.2, which was now standard). And questioned my choice of XML/XSL. Although I’d been learning new technologies and growing, he was the one who made it clear to me that I needed to keep myself ahead of the curve with the technologies I was using, or planned to use, if I wanted to stay relevant and make my life easier.
The next few projects/jobs I worked on were all more pedestrian variations on the JSP theme - first I learnt Struts, which at least made us realise there was a model, a view, and a controller. Then at Touch Clarity I learnt about Spring MVC, which actually put the validation errors next to the boxes which cause the error - by default, without you having to mess around. Spring was a revelation too, a framework that really tried not to get in your way. It was also frustrating because you needed to understand its lifecycle, but it did so much heavy lifting for you, it sped up standard CRUD-app web development enormously.
A couple of years passed, during which time I was still working on a web application (for an investment bank) but I can’t for the life of me remember what technologies we used (other than Java). I know it was hard to test and I know the tricky stuff was “back end” not “front end”.
In the next project where I had any control of the technology, I picked Spring since I’d had such a good experience previously. It took 4 developers a couple of months or so to develop an admin application for a trading app. Given the previous timescales I’d worked with, this seemed pretty good. Until a few months later and two other guys on the project produced an admin app for our bank users in a matter of weeks. I can’t remember what they used, maybe Grails? But it was another demonstration of how I really should have been researching the field instead of simply sticking with what I knew, especially when I knew my knowledge was a couple of years out of date.
Fast forward to LMAX, and we were using GWT, pre-2.0 - I think this probably feels natural if you’ve been a Swing or AWT developer, but I’m still not convinced it’s a sound web platform (although I know it has improved). It was great because cross-browser was no longer an issue, but it was bad because it separates you from the underlying HTML, which means you can seriously mess up without realising. It’s also hard to use CSS correctly when you don’t have access to all the HTML components.
So we come to more-or-less the present day, as it should be fairly obvious that during the time I’ve been working on the MongoDB Java Driver I haven’t done a lot of GUI development. I’m lucky because attending lots of conferences means I see a lot more of the current-trending technologies, but up until a couple of weeks ago I hadn’t had a chance to play with any of them.