'Delete' a line from a file

These are user .yml files created when a player joins the game.
The command '/noteadd <player> <message>' is used to add 'notes' to the specified players .yml, each time writing the message on a new line.

So what I'm trying to accomplish is deleting a line from a file on command. The command '/notedelete <player> <note no.>' is used to delete a 'note', each line in the players .yml is represented by <note no.> When a line is deleted, every line below the ones deleted needs to be moved up as well, to prevent gaps.

Here is what I have so far, the comment is where I've tried different things:

Code:java

public boolean onCommand(CommandSender cs, Command cmd, String label, String[] args) {
if (cmd.getName().equalsIgnoreCase("notedelete")) {
if (args.length == 2) {
try {
File playerNote = new File(plugin.getDataFolder() + File.separator + "playernotes", args[0] + ".yml");
if (playerNote.exists()) {
if (args.length > 1) {
// Delete line # from player.yml
} else {
cs.sendMessage("§cIncorrect syntax. Usage: /notedelete <player> <note no.>");
}
} else {
cs.sendMessage("§cThis player does not exist.");
}
} catch(IOException e) {
e.printStackTrace();
cs.sendMessage("§cPlayer note could not be deleted. See server.log");
}
} else {
cs.sendMessage("§cIncorrect syntax. Usage: /notedelete <player> <note no.>");
}
}
return true;
}

Thanks.

 

Create a Note object per player. This note object has a file that can be written to. It would be used just like a config except that it would be straight text. The note would hold each line. When you do an update method you loop through all your files updating every single note with every single line. Or you could do update(File name) and it would update just that file.

 

I did almost exactly this here, using separate Note objects as beastman3226 suggested

 

beastman3226 Chinwe Thanks guys, I shall try this out soon.