Solved Internal Error everytime there are 0 arguments, or player is not online.

I get an internal error everytime I enter no arguments with the command, or args[0] is an offline player.
However, when args[0] is a valid player, it works fine.

Code:

package me.thecerealkill3r.banwave;

import java.util.ArrayList;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;


public class BanwaveAddPlayer implements CommandExecutor{

  
    public boolean onCommand(CommandSender sender, Command cmd, String lbl,
            String[] args) {
        if(sender instanceof Player){
        Player target = Bukkit.getPlayerExact(args[0]);
        ArrayList<Player> banlist = new ArrayList<Player>();
      
        if(args.length == 0){
            sender.sendMessage(ChatColor.RED + "No player was specified.");
            return true;
        }
        if(!target.isOnline()){
            sender.sendMessage(ChatColor.RED + "Player could not be found.");
            return true;
        }else{
            banlist.add(target);
            sender.sendMessage(ChatColor.GOLD + target.getDisplayName() + ChatColor.GREEN + " was added to the banwave.  The next banwave will take place in:");
    }


}
        return false;
}
}

 

@mrdude123
Could is be because you forgot to even check if there are any args? Maybe you forgot to null check? *hint,hint*

 

You're correctly checking if args.length is 0, but you're getting args[0] before that, making it pointless.
The error when there's no player online is... Pretty obvious. I'm sure you'll figure it out.

 

@Zombie_Striker Thank you!

@adam753 After reading my stacktrace, I realized that I derped.
Thanks.

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