Easy announcements.

Announcer.java

public class Announcer {

    private final String[] announcements;
    private final int secondsBetween;
    private BukkitTask announcementTask;

    public Announcer(int secondsBetween, String... announcements) {
        this.secondsBetween = secondsBetween;
        this.announcements = announcements;

        run();
    }

    public void run() {
        announcementTask = new BukkitRunnable() {
            int last = 0;
            public void run() {
                Bukkit.broadcastMessage(announcements[last++]);

                if(last == announcements.length) last = 0;
            }
        }.runTaskTimer(BSCore.getInstance(), 20L, 20L * secondsBetween);
     }

    public void cancel() {
        announcementTask.cancel();
    }

}