How to write a Singleton in proper manner?

Question

Today in my interview one interviewer asked me to write a Singleton class. And i gave my answer as

public class Singleton {

    private static Singleton re         


        

Answer 1

Some times We might have to Create one instance of a subclass only Like Java Toolkit class. Example 1: Creating one instance of a subclass only will be elaborating out it. Please Refer: Singleton Design Patter in Java