How Many Instances of an Abstract Class Can be Created

Introduction:

The Instances of abstract classes can be made null. That is, you cannot create an instance of an abstract class because it does not have a complete implementation. Abstract classes act like templates or empty structures. For abstract classes in the OOP paradigm, you cannot instantiate them.

Information about Abstract class:

Abstract classes in Java hide complex implementation details from the user and present only the information needed to the user. This phenomenon is called data abstraction in object-oriented programming (Java).

In general, abstract classes in Java are templates that contain data members and methods used by programs. Java's abstraction avoids the user's view of complex code implementation and provides the user with the necessary information.

You cannot directly instantiate an abstract class in Java. Instead, you can subclass an abstract class. Subclassing an abstract class makes the method implementations of the abstract class available to all superclasses.

Features of Abstract Class:

• Template: Abstract classes in Java provide the best way to accomplish the process of data abstraction by giving the developer the ability to hide the implementation of the code. We also provide templates that explain how to relate to end users.

• Loose Coupling: Java's data abstraction provides loose coupling, reducing dependencies exponentially.

• Code Reusability: Using abstract classes in your code will save you time. You can call abstract methods whenever you need them. Abstract classes do not rewrite the same code.

• Abstraction: Java's data abstraction helps developers hide the complexity of their code from end users by reducing the overall nature of a project to just the necessary components.

• Resolution: Dynamic method resolution support allows developers to perform multiple tasks with a single abstract method.

Abstract class declaration rules:

Important rules to follow when using abstract classes in Java are:

• The "abstract" keyword is required when declaring an abstract class in Java.

• You cannot directly create an abstract class.

• A summary elegance needs to have as a minimum one abstract method.

• Abstract classes contain final methods.

• Abstract classes can also contain non-abstract methods.

• Abstract classes can consist of constructors and static methods.

Conclusion:

Instances of abstract classes can be made null. That is, you cannot create an instance of an abstract class because it does not have a complete implementation. Abstract classes in Java hide complex implementation details from the user and present only the information needed to the user. Abstract classes can also contain non-abstract methods.