// test main
    public static void main(String[] args) {
        // set up some events
        Event ev0 = new Event(900, 1000, "Breakfast");
        Event ev1 = new Event(1000, 1050, "COS126 lecture");
        Event ev2 = new Event(1230, 1320, "COS126 precept");
        Event ev3 = new Event(1200, 1300, "lunch with Bob");
        
        StdOut.println(ev0);
        StdOut.println(ev1);
        StdOut.println("Does " + ev0.getInfo() + " conflict with "
                           + ev1.getInfo() + "?");
        if (ev0.conflict(ev1)) StdOut.println("Yes.");
        else                   StdOut.println("No.");
        StdOut.println("Does " + ev2.getInfo() + " conflict with "
                           + ev3.getInfo() + "?");
        if (ev2.conflict(ev3)) StdOut.println("Yes.");
        else                   StdOut.println("No.");
    }