JavaPlugin

package ru.oneblock;

import java.util.Random;

import org.bukkit.Bukkit;
import org.bukkit.block.Block;
import org.bukkit.event.Event;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockBreakEvent;
import org.bukkit.event.block.BlockDamageEvent;
import org.bukkit.event.block.BlockFadeEvent;
import org.bukkit.event.server.ServerLoadEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class One extends JavaPlugin implements Listener{
    public void onEnable()
    {
    Bukkit.getServer().getPluginManager().registerEvents(this, this);
    getLogger().info("One Enabled");

    }
    @EventHandler
    public void onServerLoad(ServerLoadEvent e)
    {
    int countX = -10000;
    for (int i = 0; i < 20; i++)
    {
    Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "setblock " + countX + " 100 0 dirt replace");
    <...>
    countX += 1000;
    }

    }

    public void onDisable()
    {
    getLogger().info("9B9P Disabled");
    }

    @EventHandler
    public void onBlockBreak(BlockBreakEvent e)
    {
        Block b = e.getBlock();
        int x = b.getX();
        int z = b.getZ();
        int y = b.getY();
        if ((x % 1000 == 0) & (z % 1000 == 0) & (y == 100))
        {
            Random rd=new Random();
            int index;
            String Blocks[] = new String[] {<...>};
            index=rd.nextInt(135);
            Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "setblock " + x + " 100 " + z + " " + Blocks[index] + " destroy");
            e.setCancelled(true);
        }
    }

}