setHealth ArrayIndexOutofBounds

Can someone tell me why I can't set setHealth to integer 20?

 

What's line 22 of zufallsort.java?

 

warg check if the args.length == 1.

 

Code:

 if(cmd.getName().equalsIgnoreCase("whatever")){
if(args.length == 1){
Player target = sender.getServer().getPlayer(args[0]);
target.setHealth(20);
return true;
}
if(args.length != 1){
sender.sendMessage("Too many arguments!");
return false;
}
}

Btw, why am I checking for 1 argument if I need none? My command should set the HP of the player t0 full (20). So no argument is needed.

 

Erm, your command is "zufallsort".
And the first argument is the name of the player. You are typing: /zufallsort PLAYER
So PLAYER is your argument and therefore you have to check if args.length == 1.

No argument would be just "/zufallsort".

 

Sorry for the confusion with 'zufallsort'. I have versions and I changed the 'zufallsort' in the snippets and error logs to 'whatever'. Again, sorry for that.

What is necessary to get the command working without the PLAYER argument? So it's automatically calling the command on the player who types it in.

 

The player issuing the command is the "sender".
You must check that this is actually a player, before assigning it to a Player object. (Because sender could also be the console)

Code:

if(sender instanceof Player)
{
  Player p = (Player) sender;
}

Then you can heal this player p.

 

This code works as expected so far, except the fact that the error message isn't shown, but can someone of you guys explain me why I have to '(Player)' part in the variable target? I want to understand the code completely and I'm not quite sure what that part causes.

Push.

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