Table of Contents
- 1 Is encapsulation required for abstraction?
- 2 How do you achieve data abstraction?
- 3 Can we achieve abstraction in Java without using interface and abstract class if yes then how?
- 4 What is the difference between encapsulation and abstraction?
- 5 What are the advantages and disadvantages of abstraction?
Is encapsulation required for abstraction?
In abstraction, we use abstract classes and interfaces to hide the code complexities. We use the getters and setters methods to hide the data. The objects are encapsulated that helps to perform abstraction. The object need not to abstract that result in encapsulation.
Can we achieve abstraction without abstract class and interface?
In java, abstraction is achieved by interfaces and abstract classes. We can achieve 100\% abstraction using interfaces.
Can we achieve 100\% abstraction?
Note: Using an abstract class, we can achieve 0-100\% abstraction. Remember that, we cannot instantiate (create an object) an abstract class. An abstract class contains abstract methods as well as concrete methods.
How do you achieve data abstraction?
In C++ program if we implement class with private and public members then it is an example of data abstraction.
- Data Abstraction can be achieved in two ways:
- Abstraction using classes: An abstraction can be achieved using classes.
- Abstraction in header files: An another type of abstraction is header file.
Can we achieve abstraction without encapsulation in Java?
The object is the abstract form of the real-world and its details are hidden using encapsulation. Thus encapsulation is required for abstraction.
Why is encapsulation abstraction important?
Abstraction is the method of hiding the unwanted information. Whereas encapsulation is a method to hide the data in a single entity or unit along with a method to protect information from outside. We can implement abstraction using abstract class and interfaces.
Can we achieve abstraction in Java without using interface and abstract class if yes then how?
And yes, you can declare abstract class without defining an abstract method in it. Once you declare a class abstract it indicates that the class is incomplete and, you cannot instantiate it.
What happens when degree of abstraction is more?
Explanation: Object can be viewed as abstraction of data and code. Higher the level of abstraction, higher are the details. Explanation: Higher the level of abstraction, lower are the details.
Why is abstraction important in Java?
The main purpose of abstraction is hiding the unnecessary details from the users. Abstraction is selecting data from a larger pool to show only relevant details of the object to the user. It helps in reducing programming complexity and efforts.
What is the difference between encapsulation and abstraction?
Encapsulation is data hiding (information hiding) while Abstraction is detail hiding (implementation hiding). While encapsulation groups together data and methods that act upon the data, data abstraction deals with exposing the interface to the user and hiding the details of implementation.
How to achieve 100\% abstraction in Java?
In java, abstraction is achieved by interfaces and abstract classes. We can achieve 100\% abstraction using interfaces. An abstract class is a class that is declared with abstract keyword. An abstract method is a method that is declared without implementation.
How can we use the abstract method in a subclass?
We can use the abstract method by implementing it in a subclass i.e. a class inherits the abstract class and then implements or provides the code for all the abstract methods declared in the abstract class by overriding them. Thus it becomes compulsory to override the abstract method in the subclass.
What are the advantages and disadvantages of abstraction?
Answer: Few advantages of Abstraction are given below: 1 By hiding the background details and exposing only the abstract view to the user, abstraction makes code simpler and more readable. 2 As abstraction shields unnecessary details, it makes code smaller. 3 Code maintenance can become complex and difficult without abstraction.