public class Main {
    public static void main(String[] args) {

        int startNum = 1;
        int endNum = 100;

         new GameManager(startNum, endNum).handleValue();
    }
}

---

public class GameManager {

    private int currentNumber;
    private int maxNumber;
    private Command commandChain;

    public GameManager(int initialNumber, int maxNumber) {
        this.currentNumber = initialNumber;
        this.maxNumber = maxNumber;

        //Create the command chain - FizzBuzz has to the be first
        this.commandChain = new FizzBuzz(new Fizz(new Buzz(
                new BasicNumber(null, this), this), this), this);
    }


    public void handleValue() {
        commandChain.startCommandChain(this.currentNumber);
    }

    public void valueHandled() {
        //increment and start handling of the new value if max value not yet reached
        this.currentNumber++;
        if(this.currentNumber <= maxNumber) {
            handleValue();
        }
    }
}

---

public abstract class Command {

    private Command nextCommand;
    private GameManager gameManager;

    public Command(Command nextCommand, GameManager gameManager) {
        this.nextCommand = nextCommand;
        this.gameManager = gameManager;
    }

    public void startCommandChain(int currentNumber) {
        //if the command is able to handle the currentNumber -> notify the GameManager
        if (this.doCommand(currentNumber)) {
            this.gameManager.valueHandled();
        }
        //Go on with the chain if the currentNumber is not yet handled
        else {
            if (this.nextCommand != null) {
                this.nextCommand.startCommandChain(currentNumber);
            }
        }

    }

    abstract boolean doCommand(int currentNumber);

}

---

public class FizzBuzz extends Command {

    private static final int DIVISOR = 15;

    public FizzBuzz(Command nextCommand, GameManager gameManager) {
        super(nextCommand, gameManager);
    }

    @Override
    public boolean doCommand(int currentNumber) {
        if(currentNumber % DIVISOR == 0) {
            System.out.println("FIZZBUZZ");
            return true;
        }
        return false;
    }

}

---

public class Fizz extends Command {

    private static final int DIVISOR = 3;

    public Fizz(Command nextCommand, GameManager gameManager) {
        super(nextCommand, gameManager);
    }

    @Override
    public boolean doCommand(int currentNumber) {
        if(currentNumber % DIVISOR == 0) {
            System.out.println("FIZZ");
            return true;
        }
        return false;
    }

}

---

public class Buzz extends Command {

    private static final int DIVISOR = 5;

    public Buzz(Command nextCommand, GameManager gameManager) {
        super(nextCommand, gameManager);
    }

    @Override
    public boolean doCommand(int currentNumber) {
        if(currentNumber % DIVISOR == 0) {
            System.out.println("BUZZ");
            return true;
        }
        return false;
    }

}

---

public class BasicNumber extends Command {

    public BasicNumber(Command nextCommand, GameManager gameManager) {
        super(nextCommand, gameManager);
    }

    @Override
    public boolean doCommand(int currentNumber) {
        System.out.println(currentNumber);
        return true;
    }

}