当玩家进入服务器时，我希望每秒在记分牌中更新团队的“硬币”和“代币”。当玩家离开服务器时，BukkitRunnable应该被中断。

我做了一些实验，找到了一个解决方案。如果我写得高效实用，我会对你对代码的看法感兴趣。

“updateScoreboard（）”方法位于PlayerJoinEvent侦听器中。

你有什么改进的建议吗？

public class ScoreBoard {
    
    public void setScoreBoard(Player player) {
        
        Scoreboard board = Bukkit.getScoreboardManager().getNewScoreboard();
        Objective object = board.registerNewObjective("returnscoreboard", "dummy");
        
        object.setDisplayName("§cTest");
        object.setDisplaySlot(DisplaySlot.SIDEBAR);
        
        Team satoshis = board.registerNewTeam("satoshis");
        Team tokens = board.registerNewTeam("tokens");
        
        object.getScore("§a").setScore(6);
        object.getScore("§esatoshis:").setScore(5);
        object.getScore("§b").setScore(4);
        object.getScore("§c").setScore(3);
        object.getScore("§etokens").setScore(2);
        object.getScore("§d").setScore(1);
        object.getScore("§f").setScore(0);
        
        satoshis.addEntry("§b");
        satoshis.setPrefix("≫ §a" + API_Geld.getSatoshis(player.getUniqueId()));
        
        tokens.addEntry("§d");
        tokens.setPrefix("≫ §a" + API_Geld.getReturnTokens(player.getUniqueId()));
        
        player.setScoreboard(board);
        
    }
    
    public void updateScoreboard(Player player) {
        
        Scoreboard board = player.getScoreboard();
        Team satoshis = board.getTeam("satoshis");
        Team tokens = board.getTeam("tokens");
        
        BukkitRunnable tester = new BukkitRunnable() {
            
            @Override
            public void run() {
                if(player.isOnline()) {
                    satoshis.setPrefix("≫ §a" + API_Geld.getSatoshis(player.getUniqueId()));
                    tokens.setPrefix("≫ §a" + API_Geld.getReturnTokens(player.getUniqueId()));
                    System.out.println("RELOAD");
                } else {
                    System.out.println("OFFLINE");
                    cancel();
                }
                
            }
        };
        tester.runTaskTimer(Main.getPlugin(), 0, 40);
    }

}