public static Moon GetInstance()
{
if (moon == null)
{
moon = new Moon();
}
return(moon);
}
static void Main(string[] args)
{
Console.WriteLine("---Singleton---");
Moon obj1 = Moon.GetInstance();
Moon obj2 = Moon.GetInstance();
Console.WriteLine(obj1.GetHashCode());
Console.WriteLine(obj2.GetHashCode());
Console.WriteLine("---Non Singleton---");
Star obj3 = new Star();
Star obj4 = new Star();
Console.WriteLine(obj3.GetHashCode());
Console.WriteLine(obj4.GetHashCode());
//Press CTRL+F5 to run
}