ArrayIndexOutOfBoundsException

Code:java

package net.nerdfuryz.superpickaxe;
 
import java.util.ArrayList;
 
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
 
public class SuperPickAxe extends JavaPlugin implements Listener{
    ArrayList<String> spa = new ArrayList<String>();
 
    public void onEnable(){
        PluginManager pm = getServer().getPluginManager();
        pm.registerEvents(this, this);
    }
 
    public void onDisable(){
 
    }
    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String[] args){
        if (commandLabel.equalsIgnoreCase("spa")){
            Player player = (Player) sender;
            spa.add(player.getName());
            player.getItemInHand().getTypeId();
            player.sendMessage(ChatColor.RED + "You have successfully activated Super Pick Axe. Love Nerd xD");
                if ((cmd.getName().equalsIgnoreCase("spa")) && (args[0].equalsIgnoreCase("remove"))){{
                    player.sendMessage(ChatColor.RED + "Super Pickaxe Disabled");
                    spa.remove(player.getName());
 
            }   
            }   
        }
        return false;
    }
    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent e)//Commands Deny
            {
              Player p = e.getPlayer();
            ItemStack block = p.getItemInHand();
            if(spa.contains(p.getName())) {
                if(block.getTypeId() == 278){
                    if (e.getAction() == Action.LEFT_CLICK_BLOCK){
                        Block block1 = e.getClickedBlock();
                        World world = p.getWorld();
                        block1.setType(Material.AIR);
                        world.dropItemNaturally(block1.getLocation(), new ItemStack(block1.getType(), 1) );
 
                    }
                }
            }
    }
}

Error:

Code:java

2013-07-09 22:20:58 [INFO] NerdFuryz issued server command: /spa
2013-07-09 22:20:58 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'spa' in plugin SuperPickaxe v1.4.4
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:190)
    at org.bukkit.craftbukkit.v1_6_R2.CraftServer.dispatchCommand(CraftServer.java:527)
    at net.minecraft.server.v1_6_R2.PlayerConnection.handleCommand(PlayerConnection.java:981)
    at net.minecraft.server.v1_6_R2.PlayerConnection.chat(PlayerConnection.java:892)
    at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:839)
    at net.minecraft.server.v1_6_R2.Packet3Chat.handle(SourceFile:49)
    at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:235)
    at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:118)
    at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
    at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
    at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:592)
    at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
    at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
    at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
    at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
    at net.nerdfuryz.superpickaxe.SuperPickAxe.onCommand(SuperPickAxe.java:36)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
    ... 15 more

How can I fix this issue?

 

Check args.length before trying to access any args index. In other words, if you don't check if(args.length >= 1) you are going to receive that exception when trying to use args[0] when there are no args in your command.

 

Ok now it works but do you have any idea how I can disable the super pickaxe because that is not working.

Nvm, I got it . Thanks for the help

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