An internal error occurred while attempting this command Help!

I have developed this one plugin a week ago, cause I was bored... I've run into the error "An internal error occurred while attempting this command" when I do /hearts, but I when I do /hearts <player>, everything is fine. Here's my code;

Code:

package me.thearabiangamer.test;

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;

public class Hearts implements CommandExecutor {

    public void onEnable() {
            Bukkit.getServer().getLogger().info(null);
    }
  
    public void onDisable() {
            Bukkit.getServer().getLogger().info(null);
    }
  
    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args) {
          
            if (!(sender instanceof Player)) {
                    sender.sendMessage(ChatColor.RED + "The Console is Invinsible!");
            }
          
            Player p = (Player) sender;
            if (cmd.getName().equalsIgnoreCase("hearts")){
                if (args.length == 0){
            p.sendMessage(ChatColor.GREEN + "You Have " + p.getHealth() / 2 + " Hearts!");

                }
           
    Player target = Bukkit.getServer().getPlayer(args[0]);
    if (target == null) {
        p.sendMessage(ChatColor.RED + "Could not find player!");
        return true;
    }
        
        p.sendMessage(ChatColor.GREEN + target.getName() + " Has " + target.getHealth() / 2 + " Hearts!");
}
            return true;
    }
}

So does anyone see a error?

 

@TheArabianCoder I don't see an error, but there could be some depending on what version of Minecraft this is for. There's some outdated code in there

Also next time, you might get better luck in this forum http://bukkit.org/forums/plugin-development.5/

 

Don't get it. Why does it not extend JavaPlugin?

 

Moved to Plugin Developement.

@Larry Newman
Also next time, report it.

 

CommandExecutors don't need to extend JavaPlugin

@TheArabianCoder It really helps to post the stacktrace but I bet the error is a ArrayIndexOutOfBoundsException. You aren't doing anything to stop if the array length is 0 before you attempt to get the 0 index of the array.

 

Add a

Code:

return true;

at line 30.

 

Using Multiple Classes

Sorry, new to the bukkit forums. Ill be sure to move to Plugin Development next time I have an error.

Thanks! It worked!