Create an explosion with no particles.

NoParticleExplosion.java

package com.comphenix.example;

import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

import com.comphenix.protocol.Packets;
import com.comphenix.protocol.ProtocolLibrary;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.events.ListenerPriority;
import com.comphenix.protocol.events.PacketAdapter;
import com.comphenix.protocol.events.PacketContainer;
import com.comphenix.protocol.events.PacketEvent;
import com.comphenix.protocol.wrappers.ChunkPosition;
import com.google.common.base.Preconditions;

public class NoParticleExplosion extends JavaPlugin {
    // Whether or not there's a pending fake explosion
    private boolean pendingFakeExplosion;
    
    @Override
    public void onEnable() {
        ProtocolLibrary.getProtocolManager().addPacketListener(
                new PacketAdapter(this, ConnectionSide.SERVER_SIDE, ListenerPriority.NORMAL, 
                    Packets.Server.EXPLOSION) {
            @Override       
            public void onPacketSending(PacketEvent event) {
                if (pendingFakeExplosion) {
                    PacketContainer packet = event.getPacket();
                    World world = event.getPlayer().getWorld();
                    
                    // Just set these blocks to air
                    for (ChunkPosition position : 
                          packet.getPositionCollectionModifier().read(0)) {
                        world.getBlockAt(position.getX(), position.getY(), position.getZ()).
                            setTypeIdAndData(0, (byte)0, true);
                    }
                    // Don't send the usual packet
                    event.setCancelled(true);
                }
            }
        });
    }
    
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if (sender instanceof Player) {
            sendNoParticleExplosion(((Player) sender).getLocation(), 4, false);
        }
        return true;
    }
    
    /**
     * Create an explosion with no particles.
     * @param location - the origin or center of the explosion.
     * @param power - the power of explosion, where 4F is TNT.
     * @param setFire - whether or not to set blocks on fire.
     * @return FALSE if explosion was canceled, otherwise TRUE. 
     */
    private boolean sendNoParticleExplosion(Location location, float power, boolean setFire) {
        Preconditions.checkNotNull(location, "location cannot be NULL.");
    
        try {
            pendingFakeExplosion = true;
            return location.getWorld().createExplosion(location, power, setFire);
        } finally {
            pendingFakeExplosion = false;
        }
    }
}