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Seo Master present to you: 2009 was a remarkable year for developers. Vic Gundotra, VP of our developer team declared at Google I/O, "The web has won!" and this year was full of launches and announcements that remind us how the web has become the platform of our day. We found lots of inspiration from the developers at Google I/O in San Francisco and at our Google Developer Days in Japan, China, Brazil, Russia and the Czech Republic.



Here's a look back at some of our favorite highlights from 2009:

• Faster Apps Faster - the theme for the recent Campfire One event letting developers know how GWT 2.0 decreases development time (it's being used by Google Wave & Adwords for this reason) and how Speed Tracer gives you new insight into speeding up your apps


• Make the Web faster - as part of an effort to Make the web faster we launched tools like Page-Speed and our DNS resolution service. We also made our internal JavaScript tools available, called Closure Tools, so you can rev up your js like the guys on Gmail. With PubSubHubbub all your feeds can be real-time streams.


• A faster browser - A few weeks ago we launched Google Chrome for Mac and Linux, along with an extension framework for Chrome and a gallery for developers to distribute their extensions -- there are over 900 to check out already! Chrome has a set of developer tools built on WebKit to help optimize your code. Plus, we released details of Chrome OS...a netbook operating system for speed freaks. Along the way, we've worked with the larger web community contributing to the exciting future of the web with HTML5.


• Mobile - Android launched on one device in one country on one carrier in 2008. This year, 20 devices in 26 countries on 32 carriers have been launched or announced. Developers have created over 16,000 apps in the Android Marketplace. Some were winners of our second Android Developer Challenge. We launched new mobile versions of gmail and calendar using HTML5. You can take a picture to search using Google Goggles and get turn-by-turn navigation with Google maps. Plus, we recently announced our mobile lab for Android hardware.


• Hosting - App Engine apps were allowed to scale beyond free quotas and Java developers were invited to try it out at Campfire 1 in April. Developers responded, with over 100K apps  built on App Engine. Open source developers using Project Hosting were able to host projects on Mercurial, in addition to Subversion.


• New APIs - Google Wave was released early to developers at Google I/O in May. Wave is "equal parts conversation and document" and showcases what is possible in the browser. Developers can build robot extensions to automate common tasks or build gadget extensions to provide a new way for users to interact. Google Maps released v3, Friend Connect got more personalized and then got cozy w/ Twitter, Google Analytics released an API and then added asynchronous tracking.


• Google Web Elements - From maps to search to translate and more, Google Web Elements made it even easier than ever to add Google products to your site.


• Labs - Google Code Labs was created to let developers know which APIs and products are cutting edge labs "experiments" and which we are committed to supporting for the long term.

It is a very exciting time to be a developer...we are just starting to see what is possible with the web as the platform. It will be a lot of fun to see where all of us, together, can take the web in 2010!

Happy Holidays from the Google Developer Team!

By Mike Marchak, on behalf of the Google Developer Team2013, By: Seo Master

Seo Master present to you: Tonight at a Google Campfire One we released Google Web Toolkit 2.0, aiming to do two main things for developers:

• Make it easier to build faster apps
• Speed up the overall development cycle

This is a very exciting release because it's the cumulation of a year and a half working with teams like Google Wave, AdWords, and Orkut (among many others inside and outside of Google) to evolve GWT to meet the needs of today's web applications. There are many features and improvements, but let me call out three which we're especially excited about.

Faster Apps

Introducing: Performance profiling with Speed Tracer
The first thing you'll notice in 2.0 is that we've added a new tool called Speed Tracer. Speed Tracer is a performance profiler for Google Chrome that allows developers to see what's going on in a way which hasn't been possible before. We've worked closely with the Webkit community to add instrumentation in the browser to enable developers to gain deep insights into how code behaves, uncovering problems which have been hidden up till now.

Introducing: Incremental app download with code splitting
Another feature we've added into Google Web Toolkit is developer-guided code splitting. Code splitting allows a developer to split up their application for much, much faster startup times. Imagine if you have a settings page that users go to once a week. Why download that JavaScript when the application starts up? With code splitting, your users download just the JavaScript they need to get started.

Faster Development

Introducing: Declarative UI with UiBinder
UiBinder is a new declarative UI framework in Google Web Toolkit which enables rapid design iteration and a clean separation between presentation layer and application logic.

Dive into the details and more features in GWT 2.0.



By Andrew Bowers, GWT Product Manager2013, By: Seo Master

Seo Master present to you: By Dion Almaer, Google Developer Programs

Timepedia has released Chronoscope, an open source charting and visualization library, built using GWT.

It features:

• Canvas abstraction for drawing vector graphs
• Graph Style Sheets abstraction for configuring the look-and-feel of charts
• Scalable multiresolution rendering supporting up to tens of thousands of points
• Zoom and pan at interactive frame rates, from centuries to milliseconds
• Auto-ranging, auto-layout of chart axes and ticks.
• Auto-legend, and mini-chart Overview
• Add pushpin markers, domain and range markers, and overlays like Google Maps
• Bookmarkable chart state, works with Back button
• JS interopability. GWT API can be used by pure Javascript programmers
• Microformat support. Charts can be configured without programming.
• Server-side Font assistance. Render rotated text.
• Portable, Chronoscope is not tied to GWT, can be used to render from servlets, applets, or other environments.

What is particularly interesting is how the Chronoscope team was able to take their existing Java source code, add 8 hours of Android exploration, and ended up with the same charting and visualization library that works on Android using their graphics support.

This is one area that GWT truly shines. The fact that you write your code in the Java programming language means that you can reuse it in other places where Java runs. Being able to write one application and quickly have it run on Android and the iPhone is pretty compelling.

Here you can see it running:

2013, By: Seo Master

Seo Master present to you:

Cross-posted from the Google Web Toolkit Blog

Earlier this year at Google I/O, we announced a collaboration between Google and VMware focused on making it easy to build business-oriented, cloud portable web apps. We showed how businesses could use our integrated developer tools to build modern web apps that are “cloud ready” from the start, and can be deployed to any standard environment, including Google App Engine and on VMware vFabric on-premise solutions. Today we are happy to announce that these tools will be generally available within the next few weeks.

Of course, if you’re itching to get a head start, you can jump right in by downloading the release candidate version of SpringSource Tool Suite.

If you’d prefer to wait for the general release, you can sign up to be notified as soon as they are available.

The list of developer tools includes that are available as part of this collaboration include:

Spring Roo and Google Web Toolkit - Spring Roo, a next generation rapid application development tool, combined with the power of Google Web Toolkit (GWT) enables developers to build rich browser apps in enterprise production environments. These GWT-powered applications leverage modern browser technologies such as AJAX and HTML5 to create the most compelling end-user experience on both desktops and mobile browsers.

Spring Insight and Google Speed Tracer - Google’s Speed Tracer with VMware’s Spring Insight performance tracing technology enable end-to-end performance visibility into cloud applications. This integration provides a holistic view into the web application performance, improving the end-user experience by optimizing the client side as well as the server side.

SpringSource Tool Suite and Google Plugin for Eclipse - The integration of SpringSource Tool Suite and the Google Plugin for Eclipse makes it easy for developers to build and maintain large scale, web-based, enterprise applications, putting tools that were previously only available when building desktop and server solutions in the hands of those building cutting edge web apps.

For a complete “Getting Started” guide, be sure to checkout Getting Started with GWT, Spring Roo, and SpringSource Tool Suite.

Both teams are excited about the strides we can make in the mobile web app space. As it stands today, the current technology stack makes it possible to create optimized web apps targeted for the mobile browser. Longer term, we will be looking at incorporating mobile best practices, styled UIs, and HTML5 features such as app cache, local database storage, and geolocation to make the developer and end-user experience first class.

As always, we’d love to hear your feedback and thoughts on this release. Our GWT developer forum is the best place to post this information. Happy coding!

By Brad Abrams, Google Developer Team2013, By: Seo Master

Seo Master present to you: By Dion Almaer, Google Developer Programs

I was recently in New York City and had the chance to meet Steven Yaskin and Paul Tenberg of Queplix, a company that is trying to change the face of CRM using an open source business model. Steven and Paul are both old timers in the CRM industry, and it was very interesting to discuss their vision.

The interview focuses on QueWeb, the open source customer care application that they released. The application is built using GWT and uses a slew of Google APIs and products (such as the Google Mini). We discuss how open source affects their business, how their architected this CRM framework and details on some of the magic that allows you to slurp up legacy applications and hand you back an open source version built with GWT widgets. This enables you to tweak the functionality without being in the proprietary black box. As part of this effort, they created a slew of GWT widgets for reuse. All of this is hosting in their Google Code project.

Watch the full interview below, which ends with a short demo of QueWeb.



Thanks again to Steven and Paul for taking the time to meet.2013, By: Seo Master

Seo Master present to you:

(Cross-posted from the Google Web Toolkit blog)

In early August, Google acquired Instantiations, a company known for its focus on Eclipse Java developer tools, including GWT Designer. We're happy to announce today that we're relaunching the following former Instantiations products under the Google name and making them available to all developers at no charge:

• GWT Designer
  Powerful Eclipse-based development tools that enable Java developers to quickly create Ajax user interfaces using Google Web Toolkit (GWT)


• CodePro AnalytiX
  Comprehensive automated software code quality and security analysis tools to improve software quality, reliability, and maintainability


• WindowBuilder Pro
  Java graphical user interface designer for Swing, SWT, GWT, RCP, and XWT UI frameworks


• WindowTester Pro
  Test GUI interactions within Java client rich applications for the SWT and Swing UI frameworks

Now that these products are available again, we hope you’ll start using them within your GWT projects. Meanwhile, our next step is to more deeply unify them into the GWT family of tools by blending the fantastic Instantiations technology into the Google Plugin for Eclipse (GPE). So, there’s much more to come, including things we’re pretty sure you’ll like, such as UiBinder support in GWT Designer.

You can download any of the tools from the GWT download page. If you have questions or comments we’d love to hear from you. The best place to discuss the tools above is at http://forums.instantiations.com. As always, continue to discuss GWT and GPE at the main GWT Group.

We would love to stay in better touch with you as we have more news about how we are integrating the Instantiations products into the Google Web Toolkit suite. Sign up if you’d like to receive email updates on these products and other developer tools.

By Bruce Johnson, Google Developer Team2013, By: Seo Master

Seo Master present to you: By Dan Peterson, Google Web Toolkit team

Removing the beta label from a product is a great milestone, and we're glad to report that the latest one to make that move is the Google Web Toolkit (GWT).

With the release of Google Web Toolkit (GWT) version 1.4, we'd like to give a shout out to the open-source GWT contributors that put in many hours of hard work to make GWT what it is today. We look forward to continuing to make GWT better.

If you are new to GWT check out the story and then read up on the specifics about GWT 1.4:

There's lots and lots of cool new stuff in GWT 1.4, so it's hard to know where to start. How about application performance?! This release includes several breakthroughs that make your compiled GWT code significantly smaller and faster. Many users are reporting that after a simple recompile with 1.4, their applications are up to 30% smaller and 20%-50% faster. And startup time in particular is now highly optimized thanks to a new bootstrapping technique and the availability of image bundles. To see the new hotness in action, try visiting the new-and-improved Mail sample a few times. It's darn fast the very first time you visit it, but subsequent visits are insanely fast. That's because, in addition to a fast initial startup, GWT code uses a clever caching technique to prevent applications from making unnecessary HTTP requests. As Joel Webber (Tech Lead of GWT Core Libraries) would say, "The fastest HTTP requests are those that do not, in fact, occur."

Hungry for more?

• Download GWT
• Details for upgrading to GWT 1.4
  
• Visit the GWT blog
• Join the discussions on the GWT Developer Forum

2013, By: Seo Master

Seo Master present to you: Another Google I/O has come and gone, and speaking personally I think it's going to be hard to top this year's conference. Free Android unlocked developer devices and the unveiling of a very cool new product built with developers in mind? I already don't envy the planning team taking on next year.

There was a ton of Google Web Toolkit (GWT) related content this year, including an incredibly nice shout-out from Lars Rasmussen during the Google Wave keynote - if you haven't heard, Google Wave is built using GWT so if you want some inspiration as to what's possible, check out the keynote.

The GWT-related sessions have now been posted, so if you missed one you'll be able to catch it here. Here's a quick overview of the many sessions:

GWT Can Do What? A Preview of Google Web Toolkit 2.0: Start thinking about how you will take advantage of new features like runAsyc in the next version of Google Web Toolkit. Bruce Johnson, Co-creator of GWT, goes into the details of what's coming and the philosophy behind the new features.

Google Wave - Powered by GWT: This one's for the skeptics in your engineering department. As an adept JavaScript developer, Adam Schuck, Google Wave's Client Lead was initially skeptical about using Google Web Toolkit. Many lines of code later, he will openly tell you he's changed his mind about that. In this session, Adam discusses the Wave team's decision to use GWT and other facets of their client-side code.

Google Web Toolkit Architecture: Best Practices for Architecting your GWT App: A common question people ask is how to architect a GWT app. Ray Ryan discusses real-world learnings and patterns from the Google AdWords team and elsewhere which you can use in your apps.

Measure in Milliseconds: Performance Tips for Google Web Toolkit: Want some best practices for speeding up your app? Kelly Norton shares a few concrete issues and how to solve them.

Effective GWT: Developing a Complex, High- performance App with Google Web Toolkit: Alex Moffat and Damon Lundin from Lombardi are back again for a second year at Google I/O. Similar in theme to Ray Ryan's talk above, but with additional perspective and content, they'll take you through how they've successfully architected Lombardi Blueprint. I recommend watching both if you are laying out a new GWT app, or refactoring an existing one.

The Story of your Compile: Reading the Tea Leaves of the GWT Compiler for an Optimized Future: What if your app isn't as fast as you like it to be? While GWT tries to make your app as optimized as possible when you drive it off the lot, applications sometimes need to be tuned for racing by the developers themselves. Lex Spoon and Bruce Johnson talk about tools and techniques for understanding what's going on with your code and how to use that information to optimize your app.

Progressively Enhance AJAX Applications with Google Web Toolkit and GQuery: Ray Cromwell, from Timefire is one of my personal favorite speakers and commentators on GWT and web development. When he broke out his horse race demo in this session to measure performance deltas between different JS libraries, I knew why. Ray takes JQuery's power approach to manipulation and implements it in GWT. Learn about Ray's tool and how you can use this in your own projects to give designer's tools they can use directly in the HTML, without coding Java.

Building Applications with Google APIs: Did I mention Ray is an entertaining technical speaker? The title of this session, as Ray noted, doesn't do it justice. Related to GWT, this session outlines how he's used Google APIs and tools together to create an amazing integrated experience at Timefire. His demonstration of the interactive graph that syncs with the YouTube video is very compelling. Want to dispute Al Gore's claim of carbon emissions? Add your own dataset to the graph via a comment. Impressive.

We had a great time meeting many of you at I/O. Many of us were on hand, and talked to a lot of 'familiar email addresses' - it's nice to make that familiar faces. For those of you who didn't make it to I/O or want to revisit the GWT sessions, we hope you enjoy the session videos and presentations!

By Andrew Bowers, Google Web Toolkit Team2013, By: Seo Master

Seo Master present to you: Today we’re releasing videos from the Tech Talks and Fireside Chats at I/O 2010. A look back on each track:

Tech Talks:

From new programming languages to venture capital to 5-minute lightning talks, the Tech Talks track at I/O was a veritable potpourri of geeky goodness.

You can find videos and slides for the Tech Talks on the linked session titles below:

• Go programming - The Go programming language was released as an open source project in late 2009. Rob Pike and Russ Cox discussed how programming in Go differs from other languages.


• Opening up Closure Library - Closure Library is the open-source JavaScript library behind some of Google's big web apps like Gmail and Google Docs. Nathan Naze talked about the library, its design, and how to integrate it in with your setup.


• Optimize every bit of your site serving & web pages with Page Speed - Richard Rabbat and Bryan McQuade talked about Page Speed, an open-source Firefox/Firebug Add-on which allows web developers to evaluate and improve the performance of their web pages.


• SEO site advice from the experts - Matt Cutts, Greg Grothaus, Tiffany Lane, and Vanessa Fox offered SEO feedback on a number of actual websites submitted by the audience.


• Beyond design: Creating positive user experiences - John Zeratsky and Matt Shobe shared their tips on how to keep users coming back to your applications through a positive user experience.


• How to lose friends and alienate people: The joys of engineering leadership - Brian Fitzpatrick and Ben Collins-Sussman regaled the audience with tips on how to lead vs. manage.


• Ignite Google I/O - Brady Forrest and Ignite returned to I/O with an awesome line-up of speakers - Ben Huh, Matt Harding, Clay Johnson, Bradley Vickers, Aaron Koblin, Michael Van Riper, Anne Veling, and James Young.


• Technology, innovation, computer science, & more: A VC panel - This year was the first time that we had investors/VCs speaking at I/O. Albert Wenger, Chris Dixon, Dave McClure, Paul Graham, Brad Feld, and Dick Costolo (moderator) debated hot tech topics including betting on start-ups with non-technical founders and open vs closed platforms.
  

The Tech Talk videos are also available in this YouTube playlist.


Fireside Chats:

In the 9 fireside chats at I/O this year, Google teams were eager to talk about the latest ongoings with their respective product areas, as well as spend most of the time on audience Q&A.

This year, we decided to record fireside chats because we know how popular they are not just with I/O attendees, but everyone interested in hearing from the engineers behind our products. You can find videos for the fireside chats below:

• Android Team


• Android Handset Manufacturers


• App Engine Team


• Google Chrome Team


• Enterprise Team


• Geo Team


• GWT Team


• Social Web Team


• Google Wave Team

These videos can also be found in this Fireside Chats YouTube playlist or the YouTube playlist for each session track. (ex. the two Android Fireside Chats are also in the Android playlist)

On Monday, we’ll be posting the last batch of I/O videos from the Geo, Google APIs, and Google Wave tracks. Stay tuned!

Posted by Christine Tsai, Google I/O Team
2013, By: Seo Master

Seo Master present to you: This year's Google I/O was one to remember, with demos and presentations that showcased the power of HTML5 for consumers and businesses, as well as a complete proliferation of Android apps and devices (some of which ended up in the hands of attendees).

Day one included a keynote presentation by our own Bruce Johnson and SpringSource's Ben Alex. Here they announced the Google and VMware partnership which makes it easy for developers to harness the power of Spring Roo and GWT to build rich enterprise web apps that are cloud portable. As part of this announcement, the GWT team released GWT 2.1 M1, which not only includes VMware integration, but also Data Presentation Widgets and an MVP Framework.

Along with the great keynotes, there were plenty of in-depth GWT sessions. In the event that you missed them, here's a recap:

• Measure in milliseconds redux: Meet Speed Tracer - Kelly Norton is back for round two to demonstrate what milliseconds of latency means to end-users, as well as how to identify the sources of latency within your app using Speed Tracer.
  
  
• Faster apps faster: Optimizing apps with the GWT Compiler - Have you ever wondered how you can speed up your GWT compiles? If so, follow along with Ray Cromwell as he delves into this topic, as well as other tips and tricks that you can use to streamline development with GWT.
  
  
• Architecting for performance with GWT - Last year we announced Google Wave, a cutting edge web app that introduces a new way of collaborating and communicating. This year Wave team lead Adam Shuck, and GWT UI guru Joel Webber share with everyone the optimizations both teams use when building GWT-based web apps.
  
  
• GWT Linkers target HTML5 Web Workers, Chrome Extensions, and more - GWT has some extremely interesting technology under the hood, and Matt Mastracci, CTO of dotspots, knows this as well as anyone else. For this year's I/O he provides an overview of GWT linkers, as well as how they created a one that turns a GWT module into an HTML5 Web Worker, and one that generates an HTML App Cache manifest automatically.
  
  
• GWT's UI overhaul: UiBinder, ClientBundle, and Layout Panels - GWT 2.0 shipped with some major UI enhancements that make it very easy to speed up your app, decrease load time, and control layout. In this session, Ray Ryan and Joel Webber show you how these new features interact with one another, and how you can use them to create the most optimal web app.
  
  
• GWT + HTML5 can do what?! If you missed the YouTube video of Quake II running in the browser, this session not only replays it, but goes into great detail as to how the three Googlers actually made it happen using HTML5 features such as WebGL and WebSockets.
  
  
• GWT testing best practices - In 2009, Ray Ryan gave a talk on how to architect a GWT app using the MVP design pattern. This year, Wave's Daniel Danilatos follows-up on Ray's talk, with a detailed overview of how to remove the pain of testing GWT apps using the MVP architecture.
  
  
• Architecting GWT applications for production at Google - If you haven't noticed, it's required that at least one of Ray's talks has the word "Architecting" in it. The good news is that his talks live up to their titles, and this session is no exception. Not only does Ray evolve the concepts discussed in his 2009, "Best Practices for Architecting GWT Apps", he dives into some of the upcoming GWT 2.1 features, and invites Ben Alex, from VMware, on stage to talk about the integration between Spring Roo and GWT.
  

In addition to the linked session titles where you'll find the videos and slides, you can also find all videos in this YouTube playlist for GWT I/O 2010 sessions.

It was fantastic meeting everyone out at I/O, and we hope that it was as exciting and educational for you as it was for us. As always, stay on top of the latest GWT 2.1 release progress on the GWT Blog, and be on the lookout for posts from other I/O tracks coming soon!

By Chris Ramsdale, GWT Team
2013, By: Seo Master

Seo Master present to you: By Dan Peterson, Google Web Toolkit Team

In the midst of preparing for Google Developer Day, those of us on the Google Web Toolkit (GWT) team wanted to give you something fun to play with: GWT version 1.4 RC. This release candidate represents the first major iteration that has happened in the open, with significant contributions from the GWT open source community.

If you've not had a chance to check out GWT before, now is a great time. In version 1.4, we feel we've made significant progress on "making GWT better," including reducing the size of the JavaScript output, adding new widgets, and improving the start-up time for a given application. Give it a whirl and bring your questions to Developer Day, or feel free to post them on the GWT Developer Forum.

Read more about version 1.4 on the GWT blog.2013, By: Seo Master

Seo Master present to you: By Chris Ramsdale, Product Manager, GWT and GPE

Imagine this: you've spent the past few months hammering away at the latest mobile game sensation, Mystified Birds, and you are one level away from complete mastery. And then it happens. In a fit of excitement you throw your hands up, and along with them your Nexus S, which settles nicely at the bottom of the pool you happen to be relaxing next to. The phone is rendered useless. Luckily, your insurance policy covers the replacing the device and the Android Market handles replacing your apps. Unluckily though, all of your Mystified Birds data went the way of your device, leaving you to start from scratch.

Wouldn't it be great if your new device not only contained all of your apps, but all of your valuable data as well? We think so. With Google Plugin for Eclipse (GPE) v2.4 it's much easier to build native Android apps that can take data with them wherever they go. And there's no better place to host your backend service and store your data than Google's cloud service, App Engine.

With the latest release of GPE, we're bringing together these two great Google platforms, Android and App Engine, with a set of easy-to-use developer tools. Diving a bit deeper, here are some of the features offered in GPE 2.4:

Project Creation

With GPE 2.4, you now have the ability to create App Engine-connected Android projects. This new Eclipse project wizard generates fully functioning Android and GWT clients that are capable of talking to the same App Engine backend using the same RPC code and business logic.

Cloud to Device Messaging Support

Polling for backend changes on a mobile device is inefficient and will result in poor app performance and battery drain. As a solution for Android developers, the Android team built Cloud to Device Messaging (C2DM), a service for sending lightweight pings to notify apps when they have pending data. We heard back from developers that integrating with C2DM results in a lot of boilerplate (and sometimes fragile) code that they would rather not maintain. With the 2.4 release of GPE, when you create a new App Engine connected Android project, you'll get this code for free. All you have to do is hook up the app-specific code to customize the handling of the C2DM notification.

RPC Generation and Tooling

Writing and maintaining RPC code (code that allows your app to communicate with backend servers) is monotonous and error prone. Let's face it, you're a mobile developer and the last thing you want to be spending time on is writing (or debugging) this type of code. In GPE 2.4 we're introducing tooling that removes this task for you, and will generate all of the underlying RPC boilerplate code within a few clicks. You specify the model objects that will be used between client and server, and GPE generates the RPC service, DTOs, and client-side calling code. To make this even better, the generated code works across Android and GWT apps, so any future changes that you make will only need to be made once.

Want to get started? Download GPE 2.4 Beta here. Note that you'll need to install the Android Developer Tools (ADT) plugin as a prerequisite, which can be found here.

If you have any feedback, we'd love to hear it and the GPE Group is the right place to submit it. The App Engine and Android Developer Groups are also great sources of information.


Chris Ramsdale is Product Manager for GWT and GPE: cramsdale@google.com

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you:
By Webb Brown, Co-Founder of DayZipping

This post is part of Who's at Google I/O, a series of guest blog posts written by developers who are appearing in the Developer Sandbox at Google I/O.


We launched DayZipping in July 2010 to help people easily find day trip ideas. Before starting the project we conducted an extensive search to find the most suitable web technologies. When evaluating our options we had two priorities that eclipsed all others. First, we wanted to minimize page load times, because we believed our consumer engagement (photo views, rapid spatial searches, etc.) would be strongly impacted by site performance. Part of this requirement was offering a snappy desktop-like experience for certain sections of our site. Secondly, we wanted an environment that didn't hinder our ability to iterate quickly across our entire web platform.

Below are the key factors that lead us to believe that Google Web Toolkit (GWT) is the best tool for the job. Also, we have included evidence of how GWT features have helped us accomplish these goals:

Inherent GWT Efficiencies. The GWT project structure comes chock full of performance benefits that are practically free. Its compilation process significantly reduces code size by renaming variables and inlining method calls when possible. The bootstrapping project structure permits perfect caching of browser-specific implementations by generating deployment files based on the MD5 hash of file contents. The only cost for these performance improvements is the time spent compiling code when deploying production releases, which for us amounts to a marginal five to ten minutes per week.

Resource Bundling. GWT allows you to reduce round trip times by bundling css, image, and text resources into initial page requests. Browser-specific implementations and perfect cacheing mechanisms are all managed behind the scenes. We've used this to bundle many of our static images and in certain cases removed up to 20 fetch requests on a single page.


Code Splitting. The ability to seamlessly split deployed Javascript into logical chunks has greatly improved our user experience. Google released code splitting after we began development of DayZipping, so we were able to analyze results independent of large feature changes. Implementing code splitting reduced our initial fragment download by approximately 100K, which equated to a 40% decrease in size for most browsers. This change in initial download time decreased our bounce rate by approximately 20% on most pages.

Java Tools. The tools available for GWT development have allowed us to stay nimble despite amassing a substantial code base for a two person development team. Eclipse's refactoring tools have arguably played the largest role in our ability to quickly make changes across the project. Being able to make logical adjustments as well as renaming entire functions or classes without having to track down all references has saved us considerable time relative to a Javascript environment. Eclipse syntax recognition and code completion tools make touching dusty sections of our code more palatable. Having the power of a JUnit test suite gives us the confidence to deploy these changes as rapidly as we could imagine. During these rapid iterations, the GWT perfect caching mechanisms relieve the risk of users being stuck with stale content.


Last year our initial hypothesis of a strong negative correlation between page load times and user engagement received compelling support. We made GWT compiler flag changes that gave us an immediate ~10% performance improvement. (You can explore performance gains by experimenting with the various compiler flag options shown here and analyzing the results.) This particular enhancement drove a nearly 1 to 1 increase in user engagement, pushing average pageviews per visit above 11. These engagement improvements have directly impacted conversion rates, which as a consumer startup is arguably our most important operating metric.

GWT has met our initial requirements with high marks. We genuinely believe that we would have been unable to accomplish these tasks as effectively with any other framework. Come visit our exhibit at Google I/O to hear more about the details of our experience.


Come see DayZipping in the Developer Sandbox at Google I/O on May 10-11.

Webb Brown uses his background in investment banking and software development to do a little bit of everything at DayZipping. He spends his free time outdoors and traveling, all while trying to complete as many trips on DayZipping as possible.

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you: This post is part of the Who's @ Google I/O, a series of blog posts that give a closer look at developers who'll be speaking or demoing at Google I/O. Today's post is a guest post written by Alex Moffat, Chief Engineer - Blueprint, Lombardi Software

Lombardi has been using Google Web Toolkit (GWT for short) since January 2007 to build Lombardi Blueprint, an online, collaborative business process modeling and documentation tool. The client part of Blueprint is completely written using GWT and runs in any modern browser, that is IE6 and anything later, such as IE7, IE8 or Firefox. One of the biggest advantages of Blueprint is that it's easier to learn and quicker to use than a pure diagramming tool like Visio and it's more effective because it's focused on process mapping.

One of the things we do to make Blueprint more effective is automatic diagram layout. This allows the user to focus on describing their process instead of worrying about object positioning and line routing. You can see this in action in the video below as objects are added to the diagram.



Remember, this is JavaScript compiled by GWT from Java code, but it's as fast as, or faster than, anything you could write by hand, compact, and much, much, easier to maintain. The ability to use the excellent tooling available for Java is one of the great advantages of GWT.

One of the goals for our automated layout routines is to generate a flow diagram that looks like it was produced by a human. When the algorithms don't get it quite right, Blueprint also supports hinted layouts so that the user can drag and drop hints about where one object should be positioned in relation to another. Working out what the final layout should be and where the lines should go for large diagrams can be computationally expensive.

Modern browsers have very fast JavaScript engines. For these systems, there are no problems. However, we still need to support the browsers our customers use, which may not necessarily be the fastest or most up-to-date.

This is where GWT gives us a unique benefit. We can implement our algorithms in Java and compile this implementation twice, once with GWT to produce JavaScript to run on the client and once with javac to produce JVM bytecode to run on the server. This lets us use the much faster JVM if we need to without having to create, and maintain, separate client and server layout implementations. There's no other toolkit that makes this possible, never mind easy.

Blueprint client code continuously measures how long it takes to perform the layout and routing operation in the browser. If this exceeds our threshold value, then the code dynamically switches to trying a server side layout. We call the server code with GWT and the data structures returned, via the GWT serialization mechanism, are of course the same ones produced by the layout when executed on the client. The time required for a server layout is also measured, which includes both the execution time and any network delays so we account for the different connection experiences people have. After the first server layout, Blueprint chooses whichever method, client or server, has the lowest average elapsed time. I'm still amazed by how easy this was to implement.

Damon Lundin and I will be talking at Google I/O this year about how we built Blueprint, both what we do technically with GWT to get high performance and how we organize development so that we can make the most effective use of GWT. We look forward to meeting fellow GWT developers in person!

By Alex Moffat, Chief Engineer - Blueprint, Lombardi Software2013, By: Seo Master

Seo Master present to you: By Chukwuemeka Afigbo, Program Manager, Sub-Saharan Africa

Cross-posted from the Google Africa Blog

Creating applications and services that use Google platforms to make the internet more relevant to Africans is a big part of Google’s vision in Africa. This is why we are always excited whenever we come across individuals or companies whose efforts are in line with this vision. Here are a few of the interesting applications we have seen in recent months.

Battabox, co founded by Christian Purefoy and Yemisi Ilo, is an online social television platform developed in Nigeria that aims to provide everything Nigerian from music, film, street-life to news, comedy and cooking using the YouTube platform. Crowdsourcing videos is an important part of the Battabox strategy and they were able to achieve this using YouTube Direct running on Google App Engine integrated into their website. They also provided an Android App that enables users to upload videos directly from their Android phones.




Chukwuemeka Afigbo is a Program Manager in the Sub-Saharan Africa Outreach Team. He is an avid football (soccer) fan.

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you: Google Web Toolkit, or GWT for short, recently went live with their 1.6 release, which also included a Google plugin for Eclipse and integration with App Engine's Java language support. Google I/O will be rich with GWT content, including a number of sessions on improving productivity and app performance with GWT. In addition, there will be a number of external GWT developers leading some of these sessions and/or part of the Developer Sandbox.

As mentioned last week, we're giving you a closer look at developers who'll be presenting or demoing at I/O. Here is a taste of these GWT developers below. (New to GWT? Check out this overview)

• JBoss, a Division of Red Hat
  JBoss is well-known by developers for their enterprise open source middleware. Red Hat developer communities such as the Fedora Project and jboss.org have collaborated with Google on a number of developer initiatives over the years including Google Summer of Code, Hibernate Shards, integration with Drools and the Seam Framework and Google Gadgets integration with JBoss Portal. JBoss will be present at the Developer Sandbox.
  


• Timefire
  Timefire produces highly scalable, interactive visualizations of up to millions of data points for business intelligence, analytics, finance, sensor networks, and other industries in what they like to call "Google Maps, but for the time dimension." Their platform's built on Google Web Toolkit from the ground up, but also runs natively on Android. Timefire also uses App Engine's new Java language support for their social charting tool, Gadgets, OpenSocial, GData, Google Maps, GViz, YouTube Player API, and Protocol Buffers. Ray Cromwell will be at the Developer Sandbox as well as speaking on 2 sessions - Building Applications on the Google OpenStack and Progressively Enhance AJAX Applications with Google Web Toolkit and GQuery
  


• StudyBlue
  StudyBlue is an academic network which enables students to connect with each other and offers study tools. StudyBlue's website is built entirely with GWT. According to StudyBlue, GWT allows for complete AJAX integration without sacrificing usability or integration capabilities. StudyBlue will be at the Sandbox.
  


• Lombardi Blueprint
  Lombardi Blueprint is a cloud-based process discovery and documentation platform accessible from any browser. They've used GWT since early 2007 to write the client side of Lombardi Blueprint. GWT has enabled Lombardi to focus on writing and maintaining their Java code, while taking care of creating the browser-specific optimized AJAX for them. Alex Moffat and Damon Lundin will be at the Developer Sandbox as well as leading a session, Effective GWT: Developing a complex, high-performance app with Google Web Toolkit. (Check out Alex Moffat's video about Lombardi's use of GWT)

Finally, one little known fact - a number of Google products were developed with the help of GWT. This includes Google Moderator, Health, Checkout, Image Labeler, and Base.

Don't forget - early registration for Google I/O ends May 1. This means $100 off the standard list price (and a copy of the Chrome comic book). To register, check out the latest sessions, or see more developers who'll be presenting at I/O, visit code.google.com/io.

*Follow us for the latest I/O updates: @googleio.

By Christine Tsai, Google Developer Products2013, By: Seo Master

Seo Master present to you: By Dion Almaer, Google Developer Programs

Bob Lee is a Software Engineer at Google, currently leading up the charge on the core Android APIs. He is also one of the founders of the Google Guice project, and was the interviewee on the very first Google Developer Podcast on the topic.

He also just created a little fun application called Twubble that helps you find potential friends and followers on Twitter. The Twitterati are all over this application, and Biz Stone of Twitter even attributed it as one of a handful of reasons that have driven the rise in followers recently.

This is Bob's first GWT application, so I wanted to sit down and talk to him about why he built the application, his experience with GWT, how he integrated with Twitter, and any other nuggets of information that I could get out of him.

Please, listen in to our conversation, and let us know if you have any questions in the comments:

2013, By: Seo Master

Seo Master present to you: By Christine Tsai, Google Developer Programs

In the last few months, we've posted videos of developers sharing how they built their applications with Google developer tools and technologies. These included developers building their AJAX front-ends with Google Web Toolkit, writing mobile apps for the Android platform, and scaling their web apps with App Engine. We really enjoyed working with these developers to produce these videos. However, we thought it would be great to allow any developer to create their own video talking about their application and help them share their video with other developers on code.google.com.

Today, we're happy to announce that we're now accepting developer-created videos through this video submission page. If you've got a great app built with Google developer products and want to be considered to be featured on code.google.com, all you need to do is:

1. Check out these instructions and guidelines
2. Create a short video (or videos) based on the above guidelines and upload it to your YouTube account.
3. Submit your video details on the submission page.
4. We'll be reviewing submissions regularly and selecting videos to feature on code.google.com and/or our developer blogs.

You don't need professional equipment or even a studio to produce a good video. Here are 2 examples of videos created by developers. Note that both were shot with hand-held video recording devices and basic video editing software. And as you can see, the "sets" used are just their own workspaces:

Jimmy Moore, developer of Mibbit:



Best Buy's Giftag.com, which was recently featured on this blog:



Ready to tell us your story? Visit the submission page to get started.2013, By: Seo Master

Seo Master present to you:

(Cross-posted from the Google Web Toolkit Blog)

Google Plugin for Eclipse and GWT 2.2 are now available with several new features that we’re excited to share with you. First, Google Plugin for Eclipse 2.2 directly integrates GWT Designer, a powerful WYSIWYG Ajax user interface (UI) designer that makes it much easier to quickly build UIs. Second, developers can take advantage of the modern web with the first round of HTML5 support within the GWT SDK. Additionally, GWT’s CellTable widget now offers new functionality, such as default column sorting and the ability to set column widths. These new features make it even easier to build best in breed web apps using Java-based tools and Eclipse. And while these apps can be run on any platform, Google Plugin for Eclipse makes it very easy to deploy, and run, on Google App Engine.

Instructions for installing this new release of the Google Plugin for Eclipse and GWT SDK can be found here: Getting Started with Google Plugin for Eclipse.

If you’re simply looking for the GWT 2.2 SDK, you can find it here: GWT SDK Download.

GWT Designer
Directly integrating GWT Designer into the Google Plugin for Eclipse has been a top priority for us over the past few months. We’ve had some very positive feedback from the community early on, and for this release we not only wanted to provide the best developer experience when using GWT Designer, we also wanted a seamless experience across GWT Designer and GPE.

HTML5 features
GWT 2.2 includes support for HTML5-specific features, such as the Canvas element, which allows for dynamic, scriptable rendering of 2D shapes and bitmap images, and the embedding of Audio/Video tags. These APIs are still experimental and may change a bit over the next couple releases, but we feel that they're stable enough to deserve some real mileage (by you). Below is a demo that one of the GWT team members, Philip Rogers, put together to showcase the new Canvas support in the GWT SDK. You can find the code for this demo here: http://code.google.com/p/gwtcanvasdemo/.

New CellTable APIs
With GWT 2.1, we found that developers were often times incorporating a CellTable widget into their project, and immediately adding the boilerplate code to add sorting, and then having to jump through hoops to set column widths. With the GWT SDK 2.2 release, this functionality is now part of the CellTable widget itself. Where we can, we want to improve the native GWT widgets, adding features and functionality that minimize the custom code that developers have to write.

If you would like to see these updates in action, checkout out the CellTable example with the GWT Showcase app.

A note about Java 1.5
GWT version 2.2 will only have deprecated support for Java 1.5, resulting in warnings when building applications. While Java 1.5 will still work for this release of GWT, developers should upgrade their version of Java to correct these warnings and ensure compatibility with future versions of GWT.

If you have questions or want to provide feedback, we’d love to hear it, and the best place to do so is in the Google Web Toolkit Group.

By Chris Ramsdale, Google Developer Tools Team2013, By: Seo Master

Seo Master present to you: By Dion Almaer, Google Developer Programs

The Compiere team is trying to make ERP easier. I had a chance to catch up with Gary Wu, Di Zhao and Chris Sprague of the Compiere engineering team. We talked about their recently shipped open source ERP solution that now includes a GWT-based rich internet interface.

Using GWT was natural for the developers and allowed them to create a highly productive web experience for Compiere users in just a few months of effort. Listen to the Compiere developers discuss their experiences with GWT and see a demo of the new Compiere Web user interface.

2013, By: Seo Master