It is one of the most important Java technologies with amazing features. Some cool features are :
* It provides excellent development tools like code refactoring, code navigation, etc. via eclipse.
* A single code base for client and server.
* It helps the server and client to quickly reloaded after making changes in it.
* In this, development tools are easy to install, for that, you need only two eclipse plugins.
* It supports IDE that helps with several coding tasks and errors.
* GWT generates a WAR file which makes easier for the deployment of applications.
* It provides a faster and reliable GUI layout.
* It also allows writing web applications offline, as it relies so little on the server.
