What is private constructor ,Factory method and Singleton class in JAVA ?

Factory Method:- If the return type of method is class name then it is known as the Factory method. Private constructor defining a “virtual” constructor. Private Constructor:- The factory┬áconstructor declared with private-keyword is known as private-constructor. If the constructor is private we cannot create an object outside class. The private constructor is used to serve… Continue reading What is private constructor ,Factory method and Singleton class in JAVA ?