static void Main(string[] args)
{
var boiler1 = ChocolateBoiler.GetInstance();
var boiler2 = ChocolateBoiler.GetInstance();
if (!boiler1.IsBoiled())
{
Console.WriteLine("Boiler 1 is cold");
}
if (!boiler2.IsBoiled())
{
Console.WriteLine("Boiler 2 is cold");
}
Console.WriteLine("Turning on Boiler 1...");
boiler1.Boil();
if (boiler1.IsBoiled())
{
Console.WriteLine("Boiler 1 is boiled!");
}
if (boiler2.IsBoiled())
{
Console.WriteLine("So is Boiler 2!");
}
if (boiler1 == boiler2)
{
Console.WriteLine("GetInstance returns the same chocolate boiler each time!");
}
else
{
Console.WriteLine("GetInstance returns different chocolate boilers each time!");
}
}
public static ChocolateBoiler GetChocolateBoiler()
{
if(uniqueInstance == null)
{
uniqueInstance = new ChocolateBoiler();
}
return uniqueInstance;
}
static void Main(string[] args)
{
ChocolateBoiler boiler = ChocolateBoiler.Instance;
boiler.Fill();
boiler.Boil();
boiler.Drain();
// will return the existing instance
ChocolateBoiler boiler2 = ChocolateBoiler.Instance;
}
