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Web ToolkitJulie George & Ronald Lopez
Requirements
Java SDK version 1.5 or laterApache Ant is also necessary to run command
line arguments
Can use any Java IDEDownload Google Web toolkit
Major Components
SDK contains the Java API libraries, compiler, and development server.
GWT Designer: User friendly IDE (like .NET) for generating UI code (works on top of Eclipse)
Speed Tracer (Profiler Tool) Plugin for Eclipse: Allows for easy deployment
to Google’s app engine
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Features
Compile your Java code into highly optimized JavaScript
Debug.Run in multiple browsers.GWT compiler performs optimization– -inlining methods,dead code, optimize strings,split
points in the code
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How it works(write-debug-optimize-run)
1. unzip gwt-2.4.0.zip
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How it works(write-debug-optimize-run)
webAppCreator -out MyWebApp com.mycompany.mywebapp.MyWebApp
Run locally in development mode
cd MyWebApp/ ant devmode
Run locally in development mode
Files Created
ant build
Host page : Code executes in this html file.
Files Created
<entry-point class='com.mycompany.mywebapp.client.MyWebApp'/>
<!-- Specify the paths for translatable code --> <source path='client'/> <source path='shared'/>
Files Created
Deployment Descriptor
Files Created
ScriptsEclipseSlide 10 Host page
Java source code
Communicating with the Server
Making Remote Procedure Calls (GWT RPC)Retrieving JSON Data via HTTPMaking Cross-Site Requests for JSONPMaking Asynchronous Calls
– GWT RPC is a mechanism for passing Java objects to and from a server over standard HTTP
Deployment
Ant Build or R-click project->Google->GWT compile
Files are output to the WAR folder in your project
Deploy to Google’s App Engine– Plugin– Command line program
QUESTIONS?Then End…
