Listening to Every Player Online (At a Certain Time)

So Here is what I would like to do:
(NOTE: This is a shortened version just so I can test this)

At 6:30 at night In-Game, I would like the Plugin to check if the player's config file has the boolean "Player.transform" and If it does, send them a message saying; "You have been transformed", just for Example's Sake. How do I listen to the Time, then Check every players config file if the are transformed, and then do something?

You understand? I would make a Method like "checkPlayer" - How can I put every player online through this method at 6:30 in Game?

The Method checkPlayer would be like this:

Code:

    public void checkPlayer(String playerName) {
        dataFile = new File(this.playerData, playerName + ".yml");
        boolean isWerewolf = configPlayer.getBoolean("Player.isWerewolf");
        if (isWerewolf) {
            this.transformPlayer(playerName);           
        }
    }

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I would do a sync repeating task that checks if the time ingame and if it's the time that you want, does the transformation for the players currently online.

 

kumpelblase2 Can Anyone possibly give an example? That is what I really would have liked.

At least how do I do this sync repeating task?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

http://wiki.bukkit.org/Scheduler_Programming

In the future please use the search button, I know I've personally provided this link dozens of times to users.