What is Deferred Binding?
Deferred Binding is Google Web Toolkit’s answer to Java reflection. It’s easiest to explain Deferred Binding by starting with a use case. Every web browser has its own idiosyncrasies, usually lots of them. (The sheer unmanageable number of them is the problem GWT was created to solve in the first place.) The standard Java way of dealing with idiosyncrasies would be to encapsulate the custom code into subclasses, with one subclass for each supported browser. At runtime, the application would use reflection and dynamic classloading to select the appropriate subclass for the current environment, load the class, create an instance, and then use that instance as the service provider for the duration of the program. This is indeed what GWT does. However, the JavaScript environment in which GWT applications ultimately run simply does not support dynamic classloading (also known as dynamic binding.) You can certainly include code to support each browser in your generated JavaScript code, but t
