Capgemini placement question from previous years, Can any one answer?

What is singleton class? Where is it used?

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A singleton class is a design pattern that restricts the instantiation of a class to a single instance, ensuring global access to that instance, typically through a private constructor and a public static method. It is commonly used for managing shared resources like database Buckshot Roulette connections, configuration settings, or logging services, helping maintain consistency and control across an application.

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