Question

I searched but didn’t find any normal information for Java Singleton functions or classes , So can anybody explain why I need them? What is he difference from other functions?

Answer 1

Sometimes it's appropriate to have exactly one instance of a class: window managers, print spoolers, and filesystems are prototypical examples. Typically, those types of objects—known as Singletons

There is nothing like Singleton function , we usually use Singleton Classes

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