Google Web Toolkit provides the infrastructure you need to build a high performance web application and leaves the architecture open to fit your needs. Learn from others who have gone before. In this session we'll discuss best practices that real web applications are using to achieve high performance event handling, UI creation, and more.

Ray Ryan

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: DotSpots

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: GoGrid

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: Lombardi Blueprint

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: Citrix Systems, Inc.

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Google offers a wide variety of APIs in many domains that together form a complete platform, from authentication and authorization, cloud computing, and social networking, to visualization, mobile computing, and Google Web Toolkit. In this talk, we will walk though a complex application that integrates many APIs together, how each can solve a different need in your application, how you can share code between GWT, Android, and App Engine, and how you can monetize your application with Google Checkout.

Ray Cromwell

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In this session we'll show how you can get the most out of GWT in development, testing and deployment. It's based on our two and half years of experience building Lombardi Blueprint, a SaaS application for collaborative business process documentation. We'll cover how you can effectively integrate GWT into your development process and how to structure your code and application to take advantage of GWT's unique features in order to provide the best possible user experience. Focus: Achieving high performance, sharing code between client and server, building and testing your application, multi-page application architecture, tips and tricks.

Alex Moffat, Damon Lundin

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Google Web Toolkit is providing more and more information to developers in terms of how it is compiling your code, and how you can improve it. In this session, we will explain the tools available to you, how to interpret the results, and how you can guide this choose-your-own-adventure in the direction you want.

Bruce Johnson, Lex Spoon

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This talk follows the Google Wave team's experience building the Google Wave client using Google Web Toolkit (GWT). We'll cover some recent advances in GWT which enabled Google Wave to look and feel like a desktop application with comparable performance. In addition, we will discuss the use of WebDriver (an automated web testing tool) which is integral to the project's success.

Adam Schuck

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: InterContinental Hotels Group

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: myERP.com

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: Pentaho Corporation

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: Queplix

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: Apptio

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Watch interviews from the conference floor at the 2009 Google I/O Developer Sandbox. Developers chat with us on their apps and share technical as well as business insights on challenges and best practices.

Company interviewed: StudyBlue, Inc.

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Google I/O 2009 - Keynote Day 1
full version

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Summary

What is the Google Web Toolkit, what can you do with it, and why should you use it? Using our real world experience building Lombardi Blueprint as a case study this presentation will answer these questions.

We'll also touch on GWT's place in the development life cycle, including interaction with designers, the efficiency of the generated code, and present some useful design patterns and tips for making the best use of GWT.

Lombardi has been using GWT for nearly two years now. We've built a complete SaaS product, Lombardi Blueprint, and are using GWT extensively in our enterprise product, Teamworks, to provide both standalone Web UIs and in combination with Eclipse.

It's our belief that GWT should be your default choice for RIA development, this presentation will show you why. 

Bio
Alex Moffat is the Engineering Manager for Lombardi Software's Blueprint product and a recognized speaker on the topic of GWT with Java. His experience includes working with both customers and developers of enterprise software and has been programming in Java since beta 1.0.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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This video provides an overview of Google Web Toolkit (GWT), a tool which enables developers to produce highly optimized, browser-specific JavaScript for their apps. Andrew Bowers will demonstrate how GWT is incorporated into the development cycle by walking through a sample App Engine application utilizing GWT.

Join us at Google I/O, Google's largest developer event, happening May 27-28, 2009 in San Francisco. The Google Web Toolkit team will be on hand to answer any questions and hold deep-dive technical sessions. Register to attend: http://code.google.com/io

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Summary
This presentation explains how and why to use GWT and Gears to create rich internet applications that can also be run off-line. GWT basics like java/javascript integration, Widgets, RPC support, unit testing, CSS, and the debugger are covered before introducing Gears as the means for off-line delivery. Together, GWT and Gears "makes your browser the platform."

Bio
Didier Girard is Chief Technology Officer of SFEIR, a Paris based consulting company. In 1994 he created a community web site for literature, abut.cnam.fr and has written extensively on J2EE, server-side java applications, and GWT. He is currently working on several projects using GWT technology for GUI construction.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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What I've learned from using Google Web Toolkit - When compiling to JavaScript for testing, modify your module XML file to build JavaScript for your targeted browser(s). To improve performance, use fast string map instead of the hash map if all your keys are strings.

Alex Moffat of Lombardi Software and creators of Lombardi Blueprint, a business process mapping tool built with Google Web Toolkit

Learn more about GWT at http://code.google.com/gwt

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One thing I like about Google Web Toolkit - hosted mode. One thing I'd like to see - out-of-process hosted mode.

Alex Moffat of Lombardi Software and creators of Lombardi Blueprint, a business process mapping tool built with Google Web Toolkit

Learn more about GWT at http://code.google.com/gwt

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Alex Moffat of Lombardi Software talks about their web application Lombardi Blueprint, a business process mapping tool. Blueprint was built using Google Web Toolkit (GWT).

Learn more about GWT at http://code.google.com/gwt

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One thing I like about Google Web Toolkit - enables you to develop your web app in statically typed languages; sharing the same language between client and server. One thing I'd like to see - help make AJAX apps easily indexable by search engines.

Michael Bayne of Three Rings and creators of Whirled, a social virtual world website built with Google Web Toolkit.

Learn more about GWT at http://code.google.com/gwt

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What I've learned from using Google Web Toolkit - Use the event preview. In registering an event preview, you can register a global listener for all events happening in the browser.

Justin Kitagawa of GoGrid, a cloud computing infrastructure service provider which enables you to deploy and scale load-balanced cloud server networks via a unique multi-server control panel. GoGrid was built with Google Web Toolkit and recently won Best in Show at LinuxWorld 2008.

Learn more about GWT at http://code.google.com/gwt

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One thing I like about Google Web Toolkit - DOM abstraction, event handlers. One thing I'd like to see - Comet support, better Maven build integration.

Justin Kitagawa of GoGrid, a cloud computing infrastructure service provider which enables you to deploy and scale load-balanced cloud server networks via a unique multi-server control panel. GoGrid was built with Google Web Toolkit and recently won Best in Show at LinuxWorld 2008.

Learn more about GWT at http://code.google.com/gwt

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Justin Kitagawa of GoGrid talks about their application, a multi-server control panel that enables you to deploy and scale load-balanced cloud server networks. GoGrid recently won Best in Show at LinuxWorld 2008.

Learn more about GWT at http://code.google.com/gwt

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What I've learned from using Google Web Toolkit - Security needs to happen on both the server and the client.

Rob Powers of Clever Machine and creators of scenechronize, a production management web application for film, television and commercials. scenechronize was built using Google Web Toolkit (GWT).

Learn more about GWT at http://code.google.com/gwt

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One thing I like about Google Web Toolkit - introduction of generics in GWT 1.5. One thing I'd like to see - ability to edit CSS in hosted mode.

Rob Powers of Clever Machine and creators of scenechronize, a production management web application for film, television and commercials. scenechronize was built with Google Web Toolkit.

Learn more about GWT at http://code.google.com/gwt

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Michael Bayne of Three Rings talks about Whirled, a social virtual world website. Whirled was built using Google Web Toolkit (GWT).

Learn more about GWT at http://code.google.com/gwt

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What I've learned from using Google Web Toolkit - your web app's back button is important in making your app behave like a normal website. Google Web Toolkit's History class will come in handy.

Michael Bayne of Three Rings and creators of Whirled, a social virtual world website built with Google Web Toolkit.

Learn more about GWT at http://code.google.com/gwt

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Rob Powers of Clever Machine talks about scenechronize, a production management web application for film, television and commercials. The application was built using Google Web Toolkit (GWT).

Learn more about GWT at http://code.google.com/gwt

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Building high-performance Ajax easily with Google Web Toolkit (GWT) in Eclipse has always been possible, but soon it will be downright easy. Bruce will present GWT's upcoming Eclipse plugin that helps novices get started and lets experts fly.
Speaker: Bruce Johnson, Google

Google Tech Talks
June 24, 2008

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We interviewed Steven Yaskin and Paul Tenberg of Queplix about their GWT based open source application, Queweb. They discuss how open source affects their business, and how they use GWT, and other Google APIs.

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As Joel Webber says, "The fastest HTTP requests are those which do not, in fact, occur." GWT really takes this principle to heart. It turns out that GWT's compilation process provides the perfect opportunity to smush, pack, tweak, and jimmy the various types of resources needed in an Ajax application. Image bundles can reduce the number of image fetches by an order of magnitude. Style injection can automatically minify your CSS and inline background images as "data:" URLs. The Gadget linker automatically creates a module XML file for your GWT-based Google Gadget, and the Gears linker extension automatically creates a Gears manifest so you easily run your GWT app offline.

Is there any optimization that GWT doesn't include? No, not really. So, come learn how to use these extremely powerful tools to build surpassingly fast Ajax apps.

Bob Vawter (Google)

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Lombardi Blueprint is a browser based business process documentation and diagramming tool written using GWT and Java. It supports simultaneous viewing and editing of process definitions by multiple users in different locations with multi level undo and a rich editing experience including drag and drop, inline editing and, automatic diagram layout. Implementing these features presented several technical challenges.

Damon and Alex will describe two of the most interesting: 1) synchronizing multiple client object models with the server, and 2) providing a highly responsive diagram editing experience.

Creating a complex user interface poses particular performance problems using today's javascript engines over what can typically be performed with a native Java VM. The two main challenges we faced with our process diagram were speed of rendering in the browser and automatically laying out and routing large diagrams. Efficient rendering requires us to use a flyweight pattern to handle large html documents, while layout and routing dynamically switches between client and server execution depending on the time required to layout the diagram.

To support multi user editing and viewing Blueprint must keep client and server object models in sync. Our repository design supports doing this efficiently by only requiring us to transfer the differences between two model states in either direction. This same approach allows us also to support rollback to previously saved versions by having the server compute the set of commands required to move between any two states.

Alex Moffat and Damon Lundin (Lombardi)

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It's a rare Ajax application that doesn't need network access. To the despair of many a developer, though, there are almost as many ways of communicating with a server as there are servers. The usual alphabet soup applies (XML, JSON, SOAP, RPC, and others) but even once you pick one, you're really just getting started. Designing your services for scalability and performance is an art in itself, regardless of which format you choose to represent your data. Fortunately, a few of us have lived this nightmare and survived to talk about it.

Miguel Mendez (Google)

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We like to say that GWT brings software engineering to the crazy world of Ajax, and of course straightforward code reuse is a cornerstone of smart software engineering. Naturally, then, we had to create easy-to-reuse jars that provide Java-friendly versions of the popular Google JavaScript APIs. It's called the Google API Library for GWT. Heard of Google Maps? Gears? It's in there. Gadgets, too. Come to this hands-on session to see just how easy it can be to employ Google APIs in your GWT projects.

Miguel Mendez (Google)

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HTML, HTTP, JavaScript, CSS and most of the web development stack have been often cited as proof that "worse is better", but today divergent views of the web are emerging as we find out that that worse isn't *always* better, that ubiquity and openness are assailable advantages, and that the web's derivative value streams already are routing around the flaws in HTML's semantics. This talk looks at the divergent views being fielded today. GWT, Flex, and Silverlight all take the view that the web is a problem to be fixed, giving developers serious power to accomplish more in less time. The other view, embodied by Safari, HTML 5, Gears, and Ajax libraries like Dojo suggests that there is an evolutionary path which still provides a place for upgrades to existing semantics and practice.

Alex Russell (SitePen)

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What do you do when you want the benefits of modularity and abstraction during development, but you aren't willing to subject users with any runtime overhead to get it? If you're the GWT team, you invent deferred binding. Deferred binding is a pluggable compile-time type substitution and code generation mechanism. This unique approach to program modularization provides many of the benefits of Java reflection and dynamic class loading without compromising the GWT compiler's ability to optimize the heck out of your code.

In this Code Lab, we'll examine how the GWT libraries leverage deferred binding and GWT compiler optimizations to provide zero-overhead browser abstractions, highly optimized internationalization, automatic image bundling, and high-performance, polymorphic RPC. Did we mention that deferred binding is extensible? We'll also use deferred binding to create a new library from scratch.

Bruce Johnson (Google)

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You may already know about GWT's nifty JavaScript Native Interface (JSNI), which allows you to define native Java methods with handwritten JavaScript. In GWT 1.5, there's an even more powerful way to program close to the metal. You can now model arbitrary JavaScript types directly as Java classes (specifically, as subclasses of GWT's JavaScriptObject class), yet there is no overhead in size or speed. You can code against any JavaScript object as if it were a regular old Java object. So, what does that buy you?

• It's never been easier to integrate with external JS libraries; just define a Java class that models the JS object you want to interact with. Nice Java syntax, no overhead.
• Freely use low-level native JS data structures (JS arrays, for example) by exposing them with a Java-friendly API. You can even apply Java generics to JS types!
• Superimpose strongly-typed Java classes on JSON objects, giving you IDE code completion, refactoring and compile-time type checking.
• GWT uses this new ability to provide a complete cross-browser DOM class hierarchy based on the W3C's Java HTML bindings. Programming straight to the DOM has never been more productive.

Come learn about this unusual and powerful new capability that you can use to squeeze every drop of performance and interop out of your GWT projects.

Bruce Johnson (Google)

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In this session, see Google Web Toolkit used in exotic and creative ways to solve interesting engineering problems, from authoring OpenSocial apps that run as both Web gadgets and native Android applications, to developing Adobe AIR applications using GWT, compiling CSS selectors to Javascript at compile time, running multithreaded code with GWT and Gears workers, or exporting GWT libraries for JavaScript users. Learn the secrets of writing "faster than possible" GWT code, how to use Generators and Linkers in harmony, and make seamless procedure calls from GWT code to other environments like Flash, Gears, or Android.

Ray Cromwell (Timepedia.org)

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Summary
The Google Web Toolkit (GWT) is a Java-centric framework for creating AJAX applications. GWT cross-compiles Java source into JavaScript, allowing Java developers to use their existing Java skills and tools to create AJAX apps. GWT lead Bruce Johnson intros GWT including high-performance AJAX, internationalization, and integration with existing web app.

Bio
Bruce Johnson is works at Google as Tech Lead of the Google Web Toolkit (GWT). Prior to joining Google, Bruce wrote a Visual Basic cross-compiler for mobile, a portable version of Microsoft COM for non-MS embedded devices, but without question, cross-compiling Java into JavaScript for GWT is his funnest achievement.

About the conference
JavaZone is a conference on Software Development and Java Technology organized by the javaBin, the Java User Group in Norway. It has a technological profile, and is probably best described as a miniature JavaOne; it usually offers a combination of tuturials, technical talks and an exhibition.

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Summary
Google Web Toolkit (GWT) tech lead Bruce Johnson discusses the design of GWT, how GWT converts Java into JavaScript, community involvement with GWT, new features in GWT 1.4, and the philosophy behind GWT.

Bio
Bruce Johnson is a Google Software Engineer and tech lead of the Google Web Toolkit (GWT). Prior to joining Google, Bruce cut his product teeth as lead developer of AppForge's MobileVB product.

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Summary
In this presentation from QCon San Francisco 2007, Rajeev Dayal discusses building applications with GWT and Google Gears. Topics discussed include an overview of GWT, integrating GWT with other frameworks, GWT 1.4 features, developing large GWT applications, integrating GWT and Google Gears, the architecture of a Google Gears application, Google Gears features and the Google Gears API.

Bio
Rajeev Dayal is a Google software engineer on the Google Web Toolkit (GWT) team. His primary focus is the GWT user interface library, which involves both fun stuff (building cool widgets) and not-so-fun stuff (doing battle with an endless list of browser quirks).

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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