1. We like GWT! …we think you will too. Stuart Ervine & Franck Rasolo Nat Pryce Please plug in your laptops and pair up.

2. We like GWT! Introduction In this workshop we'll be building a short application Please figure out how to boot your laptop from either the CD or USB If you can't boot from either, please pair up with someone who can

3. We like GWT! What is GWT? Java toolkit for building rich web applications You can write all the code in Java, so no JSPs, templating languages or action classes It compiles into Javascript, uses asynchronous requests It is more akin to Swing

4. We like GWT! What we're not going to cover here: No GWTTestCase No Google API integration No 3rd party GWT library integration No optimization (though feel free to talk to us about this after) No JSNI Little, if any, CSS No clever ruby / python back end integration No discussion on client architecture Little, if any, comparison with or discussion about other (Java) web frameworks

5. We like GWT! The Client MegaBank are losing lots of cash and can't be bailed out any further - they can't sell stocks fast enough, you see the dealers didn't get their bonus and can't be bothered answering the phone any more. In fact, they're often seen down the pub... They've asked you to develop a front end to a trading platform to allow them to sell stocks online, cutting out the dealer.

6. We like GWT! The Stories Display account number & P&L. Display account holdings details. Add a way to refresh the prices. Add profit as a percentage per holding. Show negative profit holdings in red, otherwise in green Make the prices auto-refresh (see Timer) Add a way to sell the holding

7. We like GWT! Here's how it all hangs together.

8. We like GWT! Boot up your machines Boot from the USB drive (BOOT mount) or CD provided Open the APPS mounted drive and run./start.sh IntelliJ should open and you can run the sample application by clicking the Run button (green triangle)

9. We like GWT! What's been done so far Display account number & P&L. Display account holdings details. Add a way to refresh the prices. Add profit as a percentage per holding. Show negative profit holdings in red, otherwise in green Make the prices auto-refresh (see Timer) Add a way to sell the holding

10. We like GWT! What's left to do Add a way to refresh the prices. Add profit as a percentage per holding. Show negative profit holdings in red, otherwise in green Make the prices auto-refresh (see Timer) Add a way to sell the holding

11. We like GWT! Common widgets Button Button button = new Button(); button.addClickListener(new ClickListener() { public void onClick(Widget sender) { // do something } }); FlowPanel (outputs an HTML DIV tag) FlowPanel panel = new FlowPanel(); panel.add(new Label("hello")); panel.add(new Label("goodbye"));

12. We like GWT! Timers How to use a timer: Timer timer = new Timer() { public void run() { // do something } }; timer.scheduleRepeating(1000);

13. We like GWT! Any outstanding questions? Round up What did you think? Does anyone want to show & tell?

14. We like GWT! The code and slides are available at : http://code.google.com/p/welikegwt-presentation http://code.google.com/p/welikegwt-presentation Read more about GWT at : http://code.google.com/webtoolkit http://code.google.com/webtoolkit Please contact us at the following : spervine@gmail.com & nat.pryce@gmail.com spervine@gmail.com Thank you!