What is Singleton pattern?

What is Singleton pattern?

- Singleton pattern is one of the design patterns that is utilized for restricting instantiation of a class to one or few specific objects.

- This facility is particularly useful when the system requires to coordinate the actions with exactly one object.

- It is a design pattern which restricts the instantiation of a class to one object.

- This pattern is implemented by creating a class with a method which creates a new instance of the class if one does not exist.

- It is one of the simplest design patterns.

- It provides a global point of access to the object.

- It defines a getInstance() method which exposes the unique instance, which is accessed by the clients.
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