LocationStringer.java

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.World;

public class LocationStringer
{
    public static String format = "%world%,%x%,%y%,%z%";

    public static String toString(Location loc)
    {
        String location = format
                .replaceAll("%world%", loc.getWorld().getName())
                .replaceAll("%x%", String.valueOf(loc.getBlockX()))
                .replaceAll("%y%", String.valueOf(loc.getBlockY()))
                .replaceAll("%z%", String.valueOf(loc.getBlockZ()));

        return location;
    }

    public static Location fromString(String loc)
    {
        String[] parts = loc.split(",");

        World world = Bukkit.getWorld(parts[0]);
        double xPos = Double.valueOf(parts[1]);
        double yPos = Double.valueOf(parts[2]);
        double zPos = Double.valueOf(parts[3]);

        return new Location(world, xPos, yPos, zPos);
    }
}