public String locationToString(Location location) {
    return location.getWorld().getName()+", "+location.getX()+", "+location.getY()+", "+location.getZ();
}

public Location stringToLocation(String str) {
    String[] data = str.split(", ");
    return new Location(Bukkit.getWorld(data[0]), Double.parseDouble(data[1]), Double.parseDouble(data[2]), Double.parseDouble(data[3]));
}