Why it is considered a good practice for declaring data members as private?

By making the variable a private data member, you can more easily ensure that the value is never negative. On the other hand, if the variable is public, another class could change it to a negative value which can cause other parts of the code to crash.

Why should Fields be private?

Fields should be declared private unless there is a good reason for not doing so. One of the guiding principles of lasting value in programming is “Minimize ripple effects by keeping secrets.” When a field is private , the caller cannot usually get inappropriate direct access to the field.

What should be private and what should be public in a class in object oriented programming?

This allows the accessed object to be changed more easily without affecting objects that refer to it. Broadly speaking, public means everyone is allowed to access, private means that only members of the same class are allowed to access, and protected means that members of subclasses are also allowed.

How are private members of a class are different from public members?

A public member is accessible from anywhere outside the class but within a program. A private member variable or function cannot be accessed, or even viewed from outside the class.

What is one advantage of data encapsulation with respect to methods?

The main advantage of using encapsulation is the security of the data. Benefits of encapsulation include: Encapsulation protects an object from unwanted access by clients. Encapsulation allows access to a level without revealing the complex details below that level.

Should methods be public or private?

The rule is that a method should be made provided unless it is needed. One of the main reasons for this is that in a future release of an API etc., you can always make a private function public, but you can almost never make a previous public function private without breaking existing code.

Why we use public private and protected?

If the class member declared as public then it can be accessed everywhere. If the class members declared as protected then it can be accessed only within the class itself and by inheriting child classes. If the class members declared as private then it may only be accessed by the class that defines the member.

Should method be public or private?

What are the differences between private members and public members of a class how can you make a member as public or private?

The public members of a class can be accessed from anywhere in the program using the direct member access operator (.)…Difference between Public and Private.

Public	Private
All the class members declared under public will be available to everyone.	The class members declared as private can be accessed only by the functions inside the class.

What defines the behavior of an object in object oriented programming?

class. A class defines the properties and behaviors for objects. A class is a template, blue print, or contract that defines what an object’s data fields and methods will be.

Which of the following is an important difference between object oriented and procedural programming?

Object oriented programming provides data hiding so it is more secure. In procedural programming, overloading is not possible. Overloading is possible in object oriented programming. In procedural programming, function is more important than data.