Command Line Tools - GWT

STEP 1  Download GWT SDK 

Download gwt sdk at https://developers.google.com/web-toolkit/gettingstarted

STEP 2 Configure PATH

update profile as follows:

PATH=$PATH:/opt/gwt250RC2/gwt-2.5.0.rc2/

export PATH

$ source /etc/profile

STEP 3 webAppCreator


prayag@prayag:~/workspace_gwt$ webAppCreator -junit /home/prayag/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar -out gwitter com.zam.gwitter.GwitterModule

Generating from templates: [sample, eclipse, readme, _eclipse-test, _sample-test, ant]

Created directory gwitter

Created directory gwitter/src

Created directory gwitter/src/com/zam/gwitter

Created directory gwitter/src/com/zam/gwitter/client

Created directory gwitter/src/com/zam/gwitter/server

Created directory gwitter/src/com/zam/gwitter/shared

Created directory gwitter/test

Created directory gwitter/test/com/zam/gwitter

Created directory gwitter/war

Created directory gwitter/war/WEB-INF

Created directory gwitter/test/com/zam/gwitter/client

Created file gwitter/src/com/zam/gwitter/GwitterModule.gwt.xml

Created file gwitter/src/com/zam/gwitter/client/GreetingService.java

Created file gwitter/src/com/zam/gwitter/client/GreetingServiceAsync.java

Created file gwitter/src/com/zam/gwitter/client/GwitterModule.java

Created file gwitter/src/com/zam/gwitter/server/GreetingServiceImpl.java

Created file gwitter/src/com/zam/gwitter/shared/FieldVerifier.java

Created file gwitter/war/WEB-INF/web.xml

Created file gwitter/war/GwitterModule.css

Created file gwitter/war/GwitterModule.html

Created file gwitter/war/favicon.ico

Created file gwitter/.classpath

Created file gwitter/.project

Created file gwitter/GwitterModule.launch

Created file gwitter/README.txt

Created file gwitter/GwitterModuleTest-dev.launch

Created file gwitter/GwitterModuleTest-prod.launch

Created file gwitter/test/com/zam/gwitter/GwitterModuleJUnit.gwt.xml

Created file gwitter/test/com/zam/gwitter/client/GwitterModuleTest.java

Created file gwitter/build.xml

[ NOTE :  GwitterModule*.launch are launch configurations for Eclipse depending on application modes.]

STEP 4 Run an app in dev mode

prayag@prayag:~/workspace_gwt$ cd gwitter/

prayag@prayag:~/workspace_gwt/gwitter$ ant devmode 

Buildfile: /home/prayag/workspace_gwt/gwitter/build.xml

libs:

    [mkdir] Created dir: /home/prayag/workspace_gwt/gwitter/war/WEB-INF/lib

     [copy] Copying 1 file to /home/prayag/workspace_gwt/gwitter/war/WEB-INF/lib

     [copy] Copying 1 file to /home/prayag/workspace_gwt/gwitter/war/WEB-INF/lib

javac:

    [mkdir] Created dir: /home/prayag/workspace_gwt/gwitter/war/WEB-INF/classes

    [javac] /home/prayag/workspace_gwt/gwitter/build.xml:29: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds

    [javac] Compiling 5 source files to /home/prayag/workspace_gwt/gwitter/war/WEB-INF/classes

     [copy] Copying 1 file to /home/prayag/workspace_gwt/gwitter/war/WEB-INF/classes

devmode:

STEP 5 

The above command starts GWT's development mode server, a local server used for development and debugging, as follows:

Launch the local server in a browser by either 

1) clicking "Launch Default Browser" or 

2) clicking "Copy to Clipboard" (to copy its URL), then pasting into Firefox, Internet Explorer, Chrome, or Safari. 

Since this is the first time hitting the development mode server, it will prompt to install the Google Web Toolkit Developer Plugin.

The application will load in development mode, as follows:

References 

Get Started with the GWT SDK, available at https://developers.google.com/web-toolkit/gettingstarted

Command-line Tools, available at  https://developers.google.com/web-toolkit/doc/latest/RefCommandLineTools