static void Main(string[] args)
{
Console.WriteLine("Hello World!");
SingletonDemo1.Test();
SingletonDemo2.Test();
}
public static void Test()
{
SingletonDemo2 s1 = SingletonDemo2.Instance();
SingletonDemo2 s2 = SingletonDemo2.Instance();
if (s1.Equals(s2))
{
Console.WriteLine("see, only one instance!");
}
}