Classe Scoreboards

package fr.zitugi.scoreboardvite;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.scoreboard.DisplaySlot;
import org.bukkit.scoreboard.Objective;
import org.bukkit.scoreboard.Score;
import org.bukkit.scoreboard.Scoreboard;
import org.bukkit.scoreboard.ScoreboardManager;

public class Scoreboards implements Listener {

    public Scoreboards(Main main) {
    }

    @EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player p = e.getPlayer();
        createNewScoreboard(p);
    }

    public void createNewScoreboard(Player p){
        ScoreboardManager sm = Bukkit.getScoreboardManager();
        Scoreboard board = sm.getNewScoreboard();
        Objective obj = board.registerNewObjective("Stats", "dummy");
        Score kill = obj.getScore("Kills : 0");
        kill.setScore(-1);
        Score mort = obj.getScore("Morts : 0");
        mort.setScore(-2);
        obj.setDisplayName("Statistiques");
        obj.setDisplaySlot(DisplaySlot.SIDEBAR);
        p.setScoreboard(board);
    }

    @EventHandler
    public void onDeath(PlayerDeathEvent e){
        Player killed = e.getEntity();
        Player killer = killed.getKiller();
        if(killed instanceof Player){
            Scoreboard boardkilled = ((Player) killed).getScoreboard();
            Objective objkilled = boardkilled.getObjective(DisplaySlot.SIDEBAR);
            resetMorts(killed, boardkilled, objkilled);
        }
        else{
            return;
        }
        if(killer instanceof Player){
            Scoreboard boardkiller = ((Player) killer).getScoreboard();
            Objective objkiller = boardkiller.getObjective(DisplaySlot.SIDEBAR);
            resetKills(killer, boardkiller, objkiller);
        }

    }

    public void resetMorts(Player arg0, Scoreboard arg1, Objective arg2){
        for(String ligne : arg1.getEntries()){
            if(ligne.contains("Morts :")){
                arg1.resetScores(ligne);
                int score = 0;
                score = Integer.parseInt(ligne.split(" : ")[1]);
                int score2 = score+1;

                String lastligne = ligne.split(":")[0];
                String newligne = lastligne + ": " + score2;

                arg0.getScoreboard().resetScores(newligne);
                arg2.getScore(newligne).setScore(-2);
                return;
            }
        }
    }

    public void resetKills(Player arg0, Scoreboard arg1, Objective arg2){
        for(String ligne : arg1.getEntries()){
            if(ligne.contains("Kills :")){
                arg1.resetScores(ligne);
                int score = 0;
                score = Integer.parseInt(ligne.split(" : ")[1]);
                int score2 = score+1;

                String lastligne = ligne.split(":")[0];
                String newligne = lastligne + ": " + score2;

                arg0.getScoreboard().resetScores(newligne);
                arg2.getScore(newligne).setScore(-1);
                return;
            }
        }
    }

}