1.concrete class is a class which can never become an abstract or interface .It can extend or implement or both. 2.The class is said to be concrete if all its methods and variables has defined. Share Improve this answer

2010年1月27日 · A concrete class is a class that can be used to create an object. An abstract class cannot be used to create an object (you must extend an abstract class and make a concrete class to be able to then create an object). Pretend that there is a machine that can "stamp" raw materials and make a car. The stamper is a concrete class.

2010年6月23日 · A class that implements such an interface or class is called a concrete implementation (because only such an implemented class can be instantiated). The principle stated means that you shouldn't code against the concrete implementation directly, as you may want to swap it for another concrete implementation at a later time without changing your ...

2013年6月19日 · The 'SomeObj' concrete class has a default constructor but 'NSubstitute' always returns 'null' for these properties. The class itself is not under my control so I cannot simply make it derive from an interface. Can 'NSubstitute' mock these type of properties? Or is there a way to override the behaviour?

2012年4月18日 · A concrete parent class cannot force/oblige its children to include/implement a method. An abstract parent class oblige its children to do that by declaring abstract methods. Apart from the above, it comes to design and functional requirements to …

For example: Suppose someone has already created a concrete-class-C (of course the complete implementation). Now, since you are designing a new system (which has an abstract class-A ) and you analyzed the existing system and found that you are going to have some methods that are almost similar to the methods of concrete-class-C .

2016年6月9日 · A base class can't have full or concrete implementation of a method => Implementation of a method is base class is incomplete and only sub classes can provide complete implementation. Base class provides a template for method implementation but it still depends on Concrete class to complete the method implementation -Template_method_pattern

2017年3月9日 · I want to mock a concrete class, to be specific SortedDictionary. Context: I have a LocationMapper class defined as below: public class LocationMapper { private SortedDictionary<string, Loc...

2013年12月5日 · If worse comes to worse, you can create an interface and adapter pair. You would change all uses of ConcreteClass to use the interface instead, and always pass the adapter instead of the concrete class in production code. The adapter implements the interface, so the mock can also implement the interface.

public class MBeanRegistrationSupport { // the concrete class has a hook defined protected void onRegister(ObjectName objectName) { } Our class: public class UnregisterableMBeanExporter extends MBeanExporter { @Override protected void onUnregister(ObjectName name) { // always a good idea super.onRegister(name); objectMap.remove(name); }