Help with PLUGIN and ERRORS

Hi i Really need help but i dont know what im doing wrong... i made a simple plugin to set someone on fire... and it works for the most part..... for example.... if i wanted to set mysoef on fire.. (as player) i would type /light... but i shows an error... but if i choose to light myself by actually specifing a name (like mine) then it works....
Heres the code:

Code:

    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
        Player player = (Player)sender;
        if(cmd.getName().equalsIgnoreCase("light")){
            Player target = player.getServer().getPlayer(args[0]); // Gets the player who was typed in the command.
            // For instance, if the command was "/ignite notch", then the player would be just "notch".
            // Note: The first argument starts with [0], not [1]. So arg[0] will get the player typed.
            if (args.length == 0){
                player.setFireTicks(10000);
            }
            else
            {
                target.setFireTicks(10000);
            }
 
            if (args[0] == null){
                sender.sendMessage(args[0] + " is not online!");
            }
 
 
        }
}

... CAn someone please help me? Thx

 

What error?

 

Player target = player.getServer().getPlayer(args[0]);
If there is no args[0] then it throws an arrayindexoob error. You need to do a if (args.length>0) check.