Guice is a final class, an entry point to the Guice framework. It's used to create injectors by providing a set of modules:
//From NotificationClient.javaInjector injector = Guice.createInjector(new ApplicationModule());//Syntax from actual Guice Class Injector injector = Guice.createInjector( new ModuleA(), new ModuleB(), . . . new ModuleN(args));
In the preceding code snippet, notice that the createInjector() method takes ApplicationModule() as an argument; the same method also takes a varargs, which means we can pass zero or more modules separated by a comma.
