Inheritance allows programmers to create classes that are built upon existing classes, to specify a new implementation while maintaining the same behaviors (realizing an interface), to reuse code and to independently extend original software via public classes and interfaces.
Inheritance provides several advantages including reusability, saving time and effort, data hiding, extensibility, easy understandability, and reliability. An abstract class serves as a base class that cannot be instantiated on its own but provides common functionality to derived classes.
Specification inheritance is relevant where one class provides the same methods and fields as another, in particular when the objects of one class conceptually form a subset of the objects of the other. Implementation inheritance is relevant where the method implementations of two classes are similar.
Interfaces can inherit from one or more interfaces. The derived interface inherits the members from its base interfaces. A class that implements a derived interface must implement all members in the derived interface, including all members of the derived interface's base interfaces.
To access the interface methods, the interface must be "implemented" (kinda like inherited) by another class with the implements keyword (instead of extends ). The body of the interface method is provided by the "implement" class.
Implementing an Interface
To implement an interface, a class must specify that implements that interface and it must also provide implementations for all of the methods defined in the interface. If a class fails to implement one or more abstract methods from the interface, the compiler will complain.
so there are difference between inheritance and implementation is , inheritance inherit the parent class features and implementation is give a meaning to a defined idea or abstract method. interface extension is do only between interfaces.
The implementation of its parent class recreates a new class, which is the child class. To inherit the parent class, a child class must include a keyword called "extends." The keyword "extends" enables the compiler to understand that the child class derives the functionalities and members of its parent class.
Implementation inheritance is a relationship where a child class inherits behaviour implementation from a base class. Interface inheritance is when a child class only inherits the description of behaviour from the base class and provides the implementation itself.
7. Which of the following is used for implementing inheritance through an interface? Explanation: Interface is implemented using implements keyword. A concrete class must implement all the methods of an interface, else it must be declared abstract.
Encapsulation in OOPs is the concept of binding fields (object state) and methods (behavior) together as a single unit. Programming languages such as Java use encapsulation in the form of classes. A class allows programmers to create objects with variables (data) and behaviors (methods or functions).
Inheritance is a powerful tool in object-oriented programming that enables code reuse, facilitates modularity, and promotes faster development. However, it also has its drawbacks, including tight coupling, fragile base class problems, and overriding issues.
The only way to implement multiple inheritance is to implement multiple interfaces in a class. In java, one class can implements two or more interfaces. This also does not cause any ambiguity because all methods declared in interfaces are implemented in class.
Key Takeaways. An inheritance is a financial term describing the assets passed down to individuals after someone dies. Most inheritances consist of cash that's parked in a bank account but may contain stocks, bonds, cars, jewelry, automobiles, art, antiques, real estate, and other tangible assets.
Inheritance: Inheritance is “IS-A” type of relationship. “IS-A” relationship is a totally based on Inheritance, which can be of two types Class Inheritance or Interface Inheritance. Inheritance is a parent-child relationship where we create a new class by using existing class code.
Inheritance in Java is implemented using extends keyword.
Consider a real-life example to clearly understand the concept of inheritance. A child inherits some properties from his/her parents, such as the ability to speak, walk, eat, and so on. But these properties are not especially inherited in his parents only.
Encapsulation of data represented by objects happens by limiting the manipulation of the data to the methods of the class. Inheritance is the derivation of a new class (child) by inheriting attributes from other classes (parents).
Implement means to put into effect according to or by means of a definite plan or procedure; to begin, to put into action, to set on, to start a course of action. On the other hand, execute means to perform or accomplish something, as an assigned task. So the word execute means to see through to completion.
First, like Java, a Kotlin class can only inherit one superclass, but it can implement multiple interfaces. Kotlin uses the colon character “:” to indicate both inheritance and interfaces' implementation.
Not only does an interface help the compiler catch ADT implementation bugs, but it is also much more useful for a human to read than the code for a concrete implementation. Such an implementation intersperses ADT-level types and specs with implementation details.
Your class can implement more than one interface, so the implements keyword is followed by a comma-separated list of the interfaces implemented by the class. By convention, the implements clause follows the extends clause, if there is one.
Interfaces can contain methods, properties, events, and indexers. The interface itself does not provide implementations for the members that it declares.