What is Null Object Design Pattern?
The Null object pattern is a design pattern that simplifies the use of dependencies that can be undefined. This is achieved by using instances of a concrete class that implements a known interface, instead of null references. We create an abstract class specifying various operations to be done, concrete classes extending this class, and a null object class providing do-nothing implementation of this class which will be used seamlessly where we need to check the null value.
Null Object Design Pattern
The Null Object Design Pattern is a behavioral design pattern that is used to provide a consistent way of handling null or non-existing objects. It is particularly useful in situations where you want to avoid explicit null checks and provide a default behavior for objects that may not exist.
Important Topics for the Null Object Design Pattern
- What is Null Object Design Pattern?
- Components of Null Object Design Pattern
- Real-World Analogy of Null Object Design Pattern
- Example of Null Object Design Pattern
- When to use the Null Object Design Pattern
- When not to use the Null Object Design Pattern