Cancel repeating task from inside itself

I am trying to make a scoreboard update once it is created but when the player leaves the game, the console spits out errors because it is trying to apply a scoreboard to a null player.

Code:

final int task = Bukkit.getScheduler().scheduleSyncRepeatingTask(this, new Runnable()
{
    public void run()
    {
        if (player != null)
        {
            player.setScoreboard(sb);
        } else
        {
            Bukkit.getScheduler().cancelTask(task);
        }
    }
}, 0, 10);

This is my code, I have tried looking at other threads but none have the answer.

 

Thanks for the help, I got it working by doing

Code:

new BukkitRunnable()
{
    public void run()
    {
        if (player != null)
        {
            player.setScoreboard(sb);
        } else
        {
            this.cancel();
        }
    }
}.runTaskTimer(this, 0, 10);

Since

Code:

final int task = Bukkit.getScheduler().scheduleSyncRepeatingTask(this, new BukkitRunnable()
{
    public void run()
    {
        if (player != null)
        {
            player.setScoreboard(sb);
        } else
        {
            Bukkit.getScheduler().cancelTask(task);
        }
    }
}, 0, 10);

Was deprecated.