class FlyweightFactory Hashtable flyweights new Hashtable public Flywe

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class FlyweightFactory
{
Hashtable flyweights = new Hashtable();
public FlyweightFactory()
{
flyweights.Add("X", new ConcreteFlyweight());
flyweights.Add("Y", new ConcreteFlyweight());
flyweights.Add("Z", new ConcreteFlyweight());
}
public Flyweight GetFlyweight(string key)
{
if (!flyweights.ContainsKey(key))
flyweights.Add(key, new ConcreteFlyweight());
return flyweights[key] as Flyweight;
}
}
abstract class Flyweight
{
public abstract void Operation(int extrinsicState);
}
class ConcreteFlyweight : Flyweight
{
int intrinsicState;
public override void Operation(int extrinsicState)
{
}
}
class UnsharedConcreteFlyweight : Flyweight
{
int allState;
public override void Operation(int extrinsicState)
{
allState = extrinsicState;
}
}
class Client
{
void Main()
{
int extrinsicstate = 22;
FlyweightFactory f = new FlyweightFactory();
Flyweight fx = f.GetFlyweight("X");
fx.Operation(--extrinsicstate);
Flyweight fy = f.GetFlyweight("Y");
fy.Operation(--extrinsicstate);
Flyweight fd = f.GetFlyweight("D");
fd.Operation(--extrinsicstate);
UnsharedConcreteFlyweight uf = new UnsharedConcreteFlyweight();
uf.Operation(--extrinsicstate);
}
}