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Static Class: A class that only contains static components and no instance components is referred to as a static class. Singleton Class: It is a class which does not allow you to create multiple instances.
Code of Doom. How and when to use Singleton classes. Itâs a pretty well known pattern, but I want to discuss what a Singleton class is first. In a nutshell, a Singleton class is a class that will only have one instance of the class. In certain cases, we want to make sure that we cannot instantiate multiple copies of the object, so we limit it to just one copy. Instead of having a public constructor for our class, we use a private constructor.