Crazy Bukkit

RegenerateCommand.java

package me.masterejay.pizzaspleef.commands;

import com.sk89q.minecraft.util.commands.Command;
import com.sk89q.minecraft.util.commands.CommandContext;
import com.sk89q.minecraft.util.commands.CommandException;
import me.masterejay.pizzaspleef.PizzaSpleef;
import me.masterejay.pizzaspleef.utils.Cuboid;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.command.CommandSender;
import org.bukkit.command.ConsoleCommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * This command is unused atm
 * @author MasterEjay
 */
public class RegenerateCommand {
   static HashMap<Location, Block> hash = new HashMap<Location, Block>();
    @Command(aliases = {"regen", "regenerate"}, desc = "Regenerates the world", usage = "")
    public static void regen(CommandContext cmd, CommandSender sender) throws CommandException {
        for (Location l : hash.keySet()){
            if (l.getBlock().getType() == Material.AIR){
              for (Block b : hash.values()){
                  l.getBlock().setType(b.getType());
              }
            }
      }

    }
    @Command(aliases = {"save", "s"}, desc = "Saves the world", usage = "")
    public static void save(CommandContext cmd, CommandSender sender) throws CommandException {
        if (sender instanceof ConsoleCommandSender){
            throw new CommandException("Consoles can't use this command");
        }
        Player p = (Player) sender;
        Location loc1 = new Location(p.getWorld(), -42, 66, -48);
        Location loc2 = new Location(p.getWorld(), 9, 55, 0);
        Cuboid c = new Cuboid(loc1, loc2);
        int i = 0;
        for (Block b: c){
            i++;
            if (b.getType() == Material.OBSIDIAN || b.getType() == Material.GOLD_BLOCK
                    || b.getType() == Material.WOOD || b.getType() == Material.WOOL || b.getType() == Material.REDSTONE_BLOCK || b.getType() == Material.SOUL_SAND
                    || b.getType() == Material.STAINED_CLAY || b.getType() == Material.IRON_BLOCK || b.getType() == Material.WEB ){
                    hash.put(b.getLocation(), b);

            }
        }

    }
}