oop Abstraction Access Modifiers

Example

Access modifiers are used to control the access to an object or to a function/method. This is a main part of the concept of Abstraction.

Different programming languages use different access modifiers. Here are some examples:

• Java

  Java has 4 access modifiers.

  1. private - These attributes can be accessed only inside the class.
  2. protected - These attributes can be accessed by sub classes and classes from the same package.
  3. package - These attributes can be accessed by the classes within the same package only.
  4. public - These attributes can be accessed by everybody.

• C++

  C++ has 3 access modifiers.

  1. private - These attributes can be accessed only inside the class.
  2. protected - These attributes can be accessed by derived classes.
  3. public - These attributes can be accessed by everybody.

• C#

  C# has 5 access modifiers

  1. private - These attributes can be accessed only inside the class.
  2. protected internal - These attributes can be accessed by same assembly and derived classes.
  3. protected - These attributes can be accessed by derived classes.
  4. public internal - These attributes can be accessed by the classes within the same assembly.
  5. public - These attributes can be accessed by everybody.