Scoreboard with Kills and Death Stats Per Player

So I have a scoreboard:

Code:java

    public static void Scoreboard()
    {
        ScoreboardManager manager = Bukkit.getScoreboardManager();
        Scoreboard board = manager.getNewScoreboard();
        Objective statsboard = board.registerNewObjective("Stats", "dummy");
        statsboard.setDisplaySlot(DisplaySlot.SIDEBAR);
        statsboard.setDisplayName("Stats:");
        Score deaths = statsboard.getScore(Bukkit.getOfflinePlayer(ChatColor.RED + "Deaths:"));
        Score kills = statsboard.getScore(Bukkit.getOfflinePlayer(ChatColor.GREEN + "Kills:"));
        Score killstreak = statsboard.getScore(Bukkit.getOfflinePlayer(ChatColor.GOLD + "Killstreaks:"));
}

How would I make it so on the PlayerDeathEvent, the killer gets one kill added to his score and the victim gets one death added to their score?
Also, how would I make it so the scoreboard is per player? Like Player1's kills and deaths would be different from Player2's.

Also how would I save the deaths and kills in an efficient way under a player's UUID? Config?

 

For my plugin I make a folder called "Players" with a file that is the players UUID.yml so an example would be <UUID>.yml. Then I just open the correct one per player.

 

Glumpz

Er yes, but from my first post, do you know how to:

 

LordVakar I do, in the events just add to their specific score. 'Nuff said.