EventsClass :
package com.The_Chipmunks_Plugin.Events;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockPlaceEvent;
import net.md_5.bungee.api.ChatColor;

public class EventsClass implements Listener {

    @EventHandler
    public void onPlace(BlockPlaceEvent event) {

        Player player = event.getPlayer();
        Block block = event.getBlock();
        Location blockLocation = event.getBlock().getLocation();

        if (block.getType().equals(Material.TNT) || block.getType().equals(Material.LAVA_BUCKET) || block.getType().equals(Material.FLINT_AND_STEEL)) {

            player.sendMessage(ChatColor.DARK_RED + "You are placing a dangerous material: " + ChatColor.DARK_RED + "" + ChatColor.BOLD + block + ChatColor.DARK_RED + ", at: " + blockLocation.getBlockX() + " " + blockLocation.getY() + " " + blockLocation.getZ());
            Bukkit.broadcastMessage(ChatColor.DARK_RED + "WARNING!!! " + ChatColor.UNDERLINE + player.getDisplayName() + ChatColor.RESET + ChatColor.DARK_RED + ChatColor.ITALIC + "(" + player.getName() + ")" + ChatColor.RESET + ChatColor.DARK_RED + " is placing " + block + " at: " + blockLocation.getBlockX() + " " + blockLocation.getY() + " " + blockLocation.getZ());

        }

    }

}