Anil Singh | Code-sample.com

The   Singleton Pattern   ensures that a class has only one instance in the across application and the object instance coordinates across the app. This pattern is the simplest design pattern and is used to restrict the creation of multiple object instances. This pattern is the simplest design pattern and is used to restrict the creation of multiple object instances. A class should have the following structure for the Singleton Design Pattern: 1.       Should have a private or protected constructor. No public and parameterized constructors. 2.       Should have a static property to return an instance of a class. 3.       At least have one non-static public method for a singleton operation. The Singleton pattern is often used for: 1.        Logging 2.        Database connections 3.        Caching 4.  ...