GWT– Google Web

Toolkit2nd seminar (2015.12.21)

What?Tool for RIA(Rich Internet Application)Can develop client side based on Java : compile Java to Java scriptCross-browser : support all major browsersApache license 2.0 : completely free and open source

Why?Based on Java (debug, junit…) Support all major browser ( including IOS, Android)Extensible and customizable widget

GWT componentGWT compiler : Java to JavaScript

JRE Emulation library : GWT JRE

GWT UI building library

EnvironmentJDK 1.6Eclipse plugin (support IntelliJ and so on)Run on Jetty, Apache Tomcat, Jboss, IBM Web Sphere, Oracle Application Server

Parts of ApplicationModule descriptors : configuration of GWT application

Public resources : resource path for HTML page, CSS or imagesClient-side code : compilation java to java script

*JSNI(Java script Native Interface)

: Integration java into java script and vice versahttp://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html

Server-side code : java codes for backend processing

Ajax communicationStrategy1. GWT RPC (with Java servlet)2. Retrieving JSON Data via HTTP (without

Java servlet)

GWT RPCExchanging Java objects over HTTP between client and server. (Exchange serialized java object, notSOAP or REST)

Styling layoutCustomize HTML, CSSUse UIBinder

Demo

ReferenceGWT : http://www.gwtproject.org/overview.htmlTutorials point GWT

: http://www.tutorialspoint.com/gwt/index.htm