NoLavaBlockListener

package me.mrmag518.plugins.nolava;

//author mrmag518

import org.bukkit.Material;
import org.bukkit.Server;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.block.BlockListener;
import org.bukkit.event.block.BlockPlaceEvent;

public class NoLavaBlockListener extends BlockListener {
    @Override
public void onBlockPlace(BlockPlaceEvent event) {
        Player player = event.getPlayer();
        Block block = event.getBlock();
        Server server = player.getServer();

        if (!player.hasPermission("NoLava.useLava")){
            return;
        }

if ( event.getItemInHand().getType() == Material.LAVA ||
event.getItemInHand().getType() == Material.STATIONARY_LAVA ||
event.getItemInHand().getType() == Material.LAVA_BUCKET) {
    event.setCancelled(true);
}
}
}