What is singleton with example?

Example. The Singleton pattern ensures that a class has only one instance and provides a global point of access to that instance . It is named after the singleton set, which is defined to be a set containing one element. The office of the President of the United States is a Singleton.

Read more

What is singleton and why use it?

It is used where only a single instance of a class is required to control the action throughout the execution . A singleton class shouldn’t have multiple instances in any case and at any cost. Singleton classes are used for logging, driver objects, caching and thread pool, database connections.

Read more

How do you make a class static?

We can declare a class static by using the static keyword . A class can be declared static only if it is a nested class. It does not require any reference of the outer class. The property of the static class is that it does not allows us to access the non-static members of the outer class.

Read more