Don't worry! It's only stuff...

# install gwt plugin in netbeans
NETBEANS > Tools > Plugins > Available plugins > GWT4NB > Install
 
# test, create new projects
export GWT_HOME=/opt/gwt-linux
cd $GWT_HOME
./applicationCreator -out $HOME/GWT-Sample org.kamal.hello.client.HelloWorld
 /opt/gwt-linux/applicationCreator -eclipse MyProject com.mycompany.client.MyApplication
 
# rpc service demo
public void onModuleLoad() {
  RootPanel.get().add(new DBQueryUsageExample());
}
 
# LINKS
http://www.netbeans.org/kb/60/web/quickstart-webapps-gwt.html
http://www.gwt-ext.com/demo/ - GWT-Ext Showcase
http://gwt.google.com/samples/Showcase/Showcase.html
https://gwt4nb.dev.java.net/manual/quickstart.html
https://gwt4nb.dev.java.net/manual/creating_services.html
http://code.google.com/docreader/#p=google-documentation-reader,google-web-toolkit-doc-1-5&s=google-web-toolkit-doc-1-5&t=GettingStarted
http://code.google.com/p/gwt-gchartjava/
https://gwt4nb.dev.java.net/
http://wiki.netbeans.org/NBDemoGWT
http://abhijeetmaharana.com/blog/2007/12/22/oracle-10g-xe-java-on-ubuntu-feisty/