You can also show the object without a reference name. For this case, it is an anonymous object. An object without a name. An example could be to instantiate a Book object and pass it as an argument into a method without having to give the object a reference name.   You can also show the object without a class name. For this case, it is an anonymous class. An example will be to define a class using a base class or an interface and instantiate it without giving the class a name.