Personal Health Bar

package main.healthbarapi.java;

import java.util.ArrayList;
import java.util.logging.Logger;

import me.confuser.barapi.BarAPI;

import org.bukkit.ChatColor;
import org.bukkit.entity.Damageable;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class HealthBar extends JavaPlugin {
	ArrayList<String> first = new ArrayList<String>();
	public static HealthBar plugin;
	public final Logger logger = Logger.getLogger("Minecraft");
	
	@EventHandler
	public void onPlayerJoin(PlayerInteractEvent event){
		
		final Player player = event.getPlayer();
		int Health = (int) ((Damageable) event).getHealth();
		int MaxHealth = (int) ((Damageable) event).getMaxHealth();
		
		if(!first.contains(player.getName())){
			BarAPI.hasBar(player);
			BarAPI.getHealth(player);
			BarAPI.setMessage(player,ChatColor.GREEN + "Health:" + ChatColor.RED + Health + ChatColor.GREEN + "/" + ChatColor.RED + MaxHealth, 1);
		}
	}
	public void onDisable() {
		logger.info("[HealthBar] disabled!");
		logger.info("plugin by MaHl111");
		
	}
	public void onEnable() {
		logger.info("[HealthBar] enabled!");
		logger.info("plugin by MaHl111");
		
	}
}