Director is #2 from the from the 2014 AP Computer Science A Free Response problems.

https://secure-media.collegeboard.org/digitalServices/pdf/ap/ap14_frq_computer_science_a.pdf

Director class

public class Director extends Rock
{
    public Director()
    {
        super(); // not strictly required since Rock has a default constructor
        setColor(Color.RED);
    }

    public void act()
    {
        if(Color.GREEN.equals(getColor()))
        {
            for(Actor a : getGrid().getNeighbors(getLocation()))
                a.setDirection(a.getDirection() + Location.RIGHT);

            setColor(Color.RED);
        }
        else
            setColor(Color.GREEN);
    }
}

See Class writing order for a technique to respond to AP CS FR that request an entire class.

2014 AP CS Exam Free Response Solutions

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