public class Singleton { 

    //Fields 
    private static Singleton instance; 
    //Standard default Constructor 
    protected Singleton(){}; 
    //Static method for creating the single instance of the Constructor 
    public static Singleton Instance(){ 
        //initialize if not already done 
        if(instance == null) 
        instance = new Singleton(); 
        //return the initialized instance of the Singleton Class 
        return instance; 
    } 
}