![]() ![]() "We should look more deeply into what Java does here. NET team has considered the Java Default Methods documentation as a reference for the. It is also worth mentioning that the same feature has existed for a long time in Java and the. ((IDefaultInterfaceMethod)an圜lass).DefaultMethod() To access the default method of the interface, you must upcast it to the interface: An圜lass an圜lass = new An圜lass() That is the proof that the inherited class does not know anything about the default method.įigure -1- Call by the class error message The above code will produce the compile-time error: An圜lass does not contain a member DefaultMethod. If you look at the code above, you can see that the interface has a default method, and the implementer class contains neither any knowledge of this default method nor an implementation of that interface method.Ĭhange the IDefaultInterfaceMethod to An圜lass, as shown below: An圜lass an圜lass = new An圜lass() IDefaultInterfaceMethod an圜lass = new An圜lass() Ĭonsole Output: > I am a default method in the interface! ![]() -Default Interface Methods-Ĭonsole.WriteLine("I am a default method in the interface!") Instance state, instance fields, instance auto-propertiesĬonsider this simple example that illustrates how this feature works.Explicit access modifiers with default access is public.Static methods, properties, indexers, and events.Private, protected, internal, public, virtual, abstract, override, sealed, static, extern.A body for a method or indexer, property, or event accessor.For example, you can write a private method in the interface and the code will still compile and work. NET compiler is extended to accept the new keywords in the interfaces which are listed below. Also, the interface methods must be "pure behavior" without the state that means the interfaces, still, as in the past, cannot directly reference a field. Hence it suffers from the Diamond Problem, which is described below. ![]() While this feature can be a great thing, there are some dangers as it is a form of multiple inheritances. Think of how many lines of code that you have saved in each inherited class of the logger type. The ILogger implementer has to implement only the WriteLogCore method. All of the other methods, like WriteError and WriteInformation, are default methods that call the WriteLogCore method with a different configuration. Register now.Īn excellent scenario for this feature is the logging example that is described below the ILogger interface has one abstract WriteLogCore method. Get expert guidance on building intelligent apps with Azure Container Apps and AI services. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |