Singletons are part of many architecture designs. We like to create the object once and use it multiple times with easy access. Developers like to make the DBHelpers and SharedPreferences manager classes singletons. But not all developers know how to create the best singleton class. The best singleton class is one that supports every scenario of multithreading. A singleton class has various object-creation and initialization methods, such as eager initialization, lazy initialization, and double check.
A widely-used Java code to achieve the singleton design pattern and object initialization will look as follows:
public class Singleton { private static Singleton instance = null; private Singleton(){ } private synchronized static void ...
