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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.
Next Page. The Singleton's purpose is to control object creation, limiting the number of objects to only one. Since there is only one Singleton instance, any instance fields of a Singleton will occur only once per class, just like static fields. Singletons often control access to resources, such as database connections or sockets.