Binding that can be created without target is known as an untargeted bindings. These are really signs to the injector around a type, so that the dependencies are arranged eagerly. In untargeted binding, we do not require the to clause:
bind(SampleConcreteClass.class).in(Singleton.class); //Another way to define untargeted bindingbind(String.class).toInstance("./alerts/");
In this statement, the injector would prepare an instance of the String class eagerly with a value of ./alerts/. When dependency injection requires it to inject the instance of String, it will inject this specific instance. This binding is useful when defining concrete classes and types annotated by @ImplementedBy or @ProvidedBy.
