Mine

public class TestRoachPopulation {    public static void main (String [] args) {        RoachPopulation r = new RoachPopulation(10);        System.out.println("Initial Roach Count: " + r.getRoaches());        r.waitForDoubling();        r.spray();        System.out.println("One Pass Through: " + r.getRoaches());        r.waitForDoubling();        r.spray();        System.out.println("Two Pass Throughs: " + r.getRoaches());        r.waitForDoubling();        r.spray();        System.out.println("Three Pass Throughs: " + r.getRoaches());        r.waitForDoubling();        r.spray();        System.out.println("Final Pass Throughs: " + r.getRoaches());            }}