Get nearest player Bukkit.

gistfile1.java

	double closest = Double.MAX_VALUE;
	Player closestp = null;
	for(Player i : Bukkit.getOnlinePlayers()){
		double dist = i.getLocation().distance(event.getPlayer().getLocation());
		if (closest == Double.MAX_VALUE || dist < closest){
			closest = dist;
			closestp = i;
  	}
	}
	if (closestp == null){
	  //No players found
	}
	else{
	  //the closest player is closestp
	}

    loc.getWorld().getNearbyEntities(loc, distance, distance, distance).stream()
            .filter(e -> e instanceof Player)
            .findFirst()
            .orElse(null);
           just do this