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What is the difference between class inheritance and interface inheritance?
Wiki User
∙ 13y ago
interface inheritance is a misleading term. Interface inheritance would be equivalent to the union of the method signatures of interfaces ( no typo here, an interface may implment multiple other interfaces)
Class inheritance - single hierarchy (in C#), and not only the methods are inherited, but also the data members. (interface in C# cannot define data members)
Wiki User
∙ 13y ago
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What is similarities between Abstract Class and Interface?
If a class has one abstract method ,the class has to be an abstract class.Methods can be implemented in abstract class.Whereas a interface is like a abstract class...the only difference being that the methods are never implemented in Interface.
What is the major difference between an Interface and a Class?
An interface can only have abstract methods or constants in it. A class can have both that and everything else in Java.
What is the difference between inheritance and delegation?
When you inherit you typically override and specialise the virtual methods of the base class. With delegation, you embed a member object in your class and provide an interface (often a simplified interface) to that embedded object. Each embedded object takes care of itself, the container merely provides an interface and delegates the calls to the object itself.
Difference between interface and abstract class on uml?
In general, the differences are that interface has(1) no fields and(2) no implementation of methodsbut in UML interface may have features (fields), so the difference left is that interface in UML has no implemented methods while abstract class by definition is partially implemented class.
Can you use multiple inheritance in .NET?
Multiple inheritance in C# In C#, the classes are only allowed to inherit from a single parent class, which is called single inheritance. But you can use interfaces or a combination of one class and interface(s), where interface(s) should be followed by class name in the signature.
What is the Difference between multilevel and multiple inheritance?
Multiple Inheritance : we can inherit more than one class in the same class. Multi-Level Inheritance: where one class can inherit only one base class and the derived class can become base class of some other class.
Can interface extends another interface?
yes of cause interface is use in java at the place of multiple inheritance .o as like multiple inheritance u can extends interface class to other. and another think is interface contain abstract method i.e method with no defination so u can use it without any error.
What is the difference of interface and class?
A (concrete) class defines all his methods and can have any kind of instance variable and is declared with the 'class' keyword. Unlike an interface that doesn't implements any of his methods and his variables must be static and final. An interface is defined with the 'interface' keyword.//This is a classpublic class MyClass{public String name;private int age;public void myMethod(){//do something}}//This is a interfaceinterface MyInterface {public static final String name;public static final int age;public void myMethod(); // This method is not implemented}An other difference is that a class can be inheritance by other class but a interface must be implemented using the keyword 'implements'.interface Runnable(){void run();}public class MyOtherClass implements Runnable{public void run(){// insert interesting code here}}
What is the package and interfaces?
Package:- package is collection of related classes and interfaces which can be import in our program. There are different built in packages available in java.Package provide us a facility to create user define packages. Interfaces:- Interface is just like abstract class but the difference is that we can implements any no of interfaces in a single class .It is an alternative solution for multiple inheritance which is not available in java. Once we have implement the interface we can define methods of that interface in our class.
Why do you use interfaces instead of class?
JAVA does not support multiple inheritance(i.e more than one class cant be inherited by other classes.) but multiple inheritance is a very important concept . For this reason interface is used which is a kind of class but he difference is that it contains only constant variables and abstract methods. abstract methods contains only the declaration not the codes.
Does structure support polymorphism?
Yes. The only difference between a struct and a class is that a struct's members and inheritance is public by default, while a class' members and inheritance are private by default. Structs can derive from classes and classes can derive from structs. As such, they are polymorphic.
Differentiate between extends and implements keywords?
The extends keyword is used to extend/inherit the features of another class whereas the implements keyword is used when a class is implementing the features of an interface. Both these keywords are used during Inheritance
