ScoreBoard

main:
package com.gmail.oscardali370.Tutorial;

import org.bukkit.Bukkit;
import org.bukkit.plugin.java.JavaPlugin;


public class Main extends JavaPlugin {

    public static Main instance;

    @Override
    public void onLoad () {
        this.getLogger().info("-------------------------");
        this.getLogger().info("");
        this.getLogger().info("El Plugin a sido cargado");
        this.getLogger().info("");
        this.getLogger().info("-------------------------");
    }

    @Override
    public void onEnable () {
        instance = this;
        this.getLogger().info("-------------------------");
        this.getLogger().info("");
        Bukkit.getServer().getLogger().info("              Plugin Activado");
        this.getLogger().info("");
        this.getLogger().info("-------------------------");
    }

    @Override
    public void onDisable () {
        instance = this;
        this.getLogger().info("-------------------------");
        this.getLogger().info("");
        Bukkit.getServer().getLogger().info("              Plugin Desactivado");
        this.getLogger().info("");
        this.getLogger().info("-------------------------");
    }

}

agregarscoreboard:
package com.gnail.oscardali370.Score;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.scoreboard.DisplaySlot;
import org.bukkit.scoreboard.Objective;
import org.bukkit.scoreboard.Scoreboard;
import org.bukkit.scoreboard.ScoreboardManager;

public class agregarScoreBoard {

	public void addScoreboard(Player player){
		ScoreboardManager sm = Bukkit.getScoreboardManager();
		Scoreboard score = sm.getNewScoreboard();
		Objective obj = score.registerNewObjective("scoreb1", "dummy");
		obj.setDisplaySlot(DisplaySlot.SIDEBAR);
		obj.setDisplayName("§a§lGRIME§F§LZONE");
		obj.getScore("§cFuego").setScore(player.getFireTicks());
		obj.getScore(" ").setScore(1);
		obj.getScore("§7").setScore(2);
		obj.getScore("§5Jug. Online").setScore(Bukkit.getOnlinePlayers().size());
		player.setScoreboard(score);

	}

	public void removeScoreboard(Player Player){

		Player.setScoreboard(Bukkit.getScoreboardManager().getNewScoreboard());


	}

}

test:
package com.gmail.oscardali370.Score;

import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.craftbukkit.Main;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;



import com.gnail.oscardali370.Score.agregarScoreBoard;

public class Test implements CommandExecutor{

	private Main plugin;
	private agregarScoreBoard as = new agregarScoreBoard();
	public Test(Main pl){
		plugin = pl;
	}

	public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
		Player player = (Player)sender;
		if(cmd.getName().equalsIgnoreCase("score")){
			if(args.length == 0){
				Bukkit.getScheduler().runTaskTimer((Plugin) plugin, new Runnable() {
					@Override
					public void run() {
						as.addScoreboard(player);
					}
				}, 20, 1);

				as.addScoreboard(player);
			}else if(args.length == 1){
				if(args[0].equals("remove")){
					as.removeScoreboard(player);
				}
			}
		}
		return false;
	}


}