import java.util.*;

public class FlyweightFactory {
  HashMap pool = new HashMap();

  public FlyweightFactory() {
    pool.put("A" , new ConcreteFlyweight());
    pool.put("B" , new ConcreteFlyweight());
    pool.put("C" , new ConcreteFlyweight());
  }

  public Flyweight getFlyweight(String key) {
    return (Flyweight)pool.get(key);
  }
}

abstract class Flyweight {
  abstract public void operation(int extrinsicstate);
}

public class ConcreteFlyweight extends Flyweight {
  public void operation(int extrinsicstate) {
    System.out.println("ConcreteFlyweight " + extrinsicstate);
  }
}

public class UnsharedConcreteFlyweight extends Flyweight {
  public void operation(int extrinsicstate) {
    System.out.println("UnsharedConcreteFlyweight " + extrinsicstate);
  }
}

public class Client {
  public static void main(String[] args) {
    int extrinsicstate = 10;

    FlyweightFactory factory = new FlyweightFactory();

    Flyweight fa = factory.getFlyweight("A");
    fa.operation(--extrinsicstate);

    Flyweight fb = factory.getFlyweight("B");
    fb.operation(--extrinsicstate);

    Flyweight fc = factory.getFlyweight("C");
    fc.operation(--extrinsicstate);

    UnsharedConcreteFlyweight fu = new
                                   UnsharedConcreteFlyweight();

    fu.operation(--extrinsicstate);
  }
}

C:\JavaHello\Flyweight>java Client
ConcreteFlyweight 9
ConcreteFlyweight 8
ConcreteFlyweight 7
UnsharedConcreteFlyweight 6

C:\JavaHello\Flyweight>