Did someone know a better area regenerate as my?

Code:

Bukkit.getScheduler().runTask(plug, new Runnable() {
            @SuppressWarnings("deprecation")
            @Override
            public void run() {
                for(String s : Map){
                    String[] BlockData = s.split(":");
                    int id = Integer.parseInt(BlockData[0]);
                    byte data = Byte.parseByte(BlockData[1]);
                    World w = Bukkit.getWorld(BlockData[2]);
                    int x = Integer.parseInt(BlockData[3]);
                    int y = Integer.parseInt(BlockData[4]);
                    int z = Integer.parseInt(BlockData[5]);
                    Block b = w.getBlockAt(x, y, z);
                    b.setTypeIdAndData(id, data, true);
                    if(b.getType().equals(Material.STONE)){
                        if(b.getData()==3)
                            continue;
                        int Ran = new Random().nextInt(30);
                        if(Ran == 9){
                            w.getBlockAt(x, y, z).setType(Material.IRON_ORE);
                            continue;
                        }else if(Ran == 5){
                            w.getBlockAt(x, y, z).setType(Material.COAL_ORE);;
                        }
                    }
                    if(!w.getBlockAt(x, y, z).equals(b)){
                        w.getBlockAt(x, y, z).setTypeIdAndData(id,data,true);
                    }
                }State = GameState.Lobby;
            }
        });

 

part but I need the ores

part and I need the ores

EDIT by Moderator: merged posts, please use the edit button instead of double posting.