MAIN

package me.mrfajapl.bawionko;

import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener{

	@Override
	public void onDisable() {
		System.out.println("Plugin zostal wlaczony");
	}

	@Override
	public void onEnable() {
		this.getServer().getPluginManager().registerEvents(this, this);
		System.out.println("Plugin zostal wylaczony");
	}
}









WALENIE


package me.mrfajapl.bawionko;

import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;

public class Walenie implements Listener{

	public static Walenie plugin;

@EventHandler
public void onEntityDamageByEntity(EntityDamageByEntityEvent event){
	Entity e = event.getEntity();
	if(e instanceof Player){
		Player player = (Player) e;
		player.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 180 ,2));
		event.setDamage(0);
	}
		Player player = (Player) e;
		player.addPotionEffect(new PotionEffect(PotionEffectType.HEALTH_BOOST, 40 ,1));
		event.setDamage(0);
}
}