Extreme Programming (also termed as XP) is an agile software development methodology. XP focuses on coding of software. XP has four core values and fourteen principles. XP has these four core values: Communication: The team should communicate on a regular basis, share information, discuss solutions, and so on. Teams that… Continue reading
The main deliverable in Agile is a working software and not documentation. Documentation is a support to get the working software. In traditional delivery cycle, a lot of documentation is generated in the design and requirement phases. But we are sure most of the documentation were created just for the… Continue reading
Agile modeling defines a set of practices which can show us the way towards becoming successful Agile modelers. These practices are divided into two sections: “Core Principles” and “Supplementary Principles”. The figure below shows this in a pictorial format: Figure: Agile model principles Let’s understand one by one what these… Continue reading
Agile modeling is an approach to the modeling aspects of software development. It’s a practice for modeling and documentation for software systems. In one line: It’s a collection of best practices for software modeling in a lightweight manner. In abstraction, we can say it augments other software processes. For instance,… Continue reading
Friend classes are used when two or more classes are designed to work together and need access to each other’s implementation in ways that the rest of the world shouldn’t be allowed to have. In other words, they help keep private things private. For instance, it may be desirable for… Continue reading
The declaration tells the compiler that at some later point we plan to present the definition of this declaration. E.g.: void stars () //function declaration The definition contains the actual implementation. E.g.: void stars() // function definition { for (int j = 10; j & gt; = 0; j–) //function… Continue reading
A virtual function makes its class a polymorphic base class. Derived classes can override virtual functions. Virtual functions called through base class pointers/references will be resolved at run-time. That is, the dynamic type of the object is used instead of its static type: Derived d; Base& rb = d; // if Base::f() is… Continue reading
Abstraction can also be achieved through composition. It solves a complex problem by defining only those classes which are relevant to the problem and not involving the whole complex code into play. The vehicle class described above is an example of abstraction. Abstraction is the process of representing simplified versions… Continue reading
Encapsulation specifies the different classes which can use the members of an object. The main goal of encapsulation is to provide an interface to clients which decrease the dependency on those features and parts which are likely to change in future. This facilitates easy changes to the code and features.
Answers1: In a interface class, all methods are abstract without implementation where as in an abstract class some methods we can define concrete. In interface, no accessibility modifiers are allowed. An abstract class may have accessibility modifiers. Interface and abstract class are basically a set of rules which u have… Continue reading