an internal error occoured???

Hey, i have this code but when i use my command it says internal error occoured please help

Code:

package me.vhbob.pp;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Cow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Pig;
import org.bukkit.entity.Player;
import org.bukkit.entity.Sheep;
import org.bukkit.metadata.FixedMetadataValue;
import org.bukkit.plugin.java.JavaPlugin;

public class pp extends JavaPlugin {

    public boolean onCommand(CommandSender sender, Command cmd, String label,
            String[] args) {
        if (cmd.getName().equalsIgnoreCase("pets")) {
            Player p = (Player) sender;
            if (args.length == 0) {
                p.sendMessage(ChatColor.RED + "Cow, pig, sheep");
            } else if (args.length == 1) {
                String name = getConfig().getString(p.getName() + "pet name");
                name.replace("&", "§");
                for (Entity en : p.getNearbyEntities(100, 100, 100)) {
                    if (en.hasMetadata(p.getName() + "pet")) {
                        en.remove();
                    }
                }
                if (args[0].equalsIgnoreCase("cow")) {
                    Cow c = (Cow) p.getWorld().spawnEntity(p.getLocation(),
                            EntityType.COW);
                    c.setTarget(p);
                    c.setMetadata(p.getName() + "pet", new FixedMetadataValue(
                            this, 1));
                    p.sendMessage(ChatColor.GREEN + "Your cow pet was spawned!");
                }
                if (args[0].equalsIgnoreCase("pig")) {
                    Pig pi = (Pig) p.getWorld().spawnEntity(p.getLocation(),
                            EntityType.PIG);
                    pi.setTarget(p);
                    pi.setMetadata(p.getName() + "pet", new FixedMetadataValue(
                            this, 1));
                    p.sendMessage(ChatColor.GREEN + "Your pig pet was spawned!");
                }
                if (args[0].equalsIgnoreCase("sheep")) {
                    Sheep sh = (Sheep) p.getWorld().spawnEntity(
                            p.getLocation(), EntityType.SHEEP);
                    sh.setTarget(p);
                    sh.setMetadata(p.getName() + "pet", new FixedMetadataValue(
                            this, 1));
                    p.sendMessage(ChatColor.GREEN
                            + "Your sheep pet was spawned!");
                }
                if (args[0].equalsIgnoreCase("name")) {
                }
            }
        }
        return true;
    }

}

 

@vhbob Check if sender is a player before casting.

 

*Offtopic*
Did you stole my signature @vhbob
*Ontopic*

Will do nothing because Strings are immutable.
Use

Code:

name = ChatColor.translateAlternateColorCodes('&', name);

 

yea i stole your signature @FisheyLP and my code still doesnt work, here's the code :

Code:

package me.vhbob.pp;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Cow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Pig;
import org.bukkit.entity.Player;
import org.bukkit.entity.Sheep;
import org.bukkit.metadata.FixedMetadataValue;
import org.bukkit.plugin.java.JavaPlugin;

public class pp extends JavaPlugin {

    public boolean onCommand(CommandSender sender, Command cmd, String label,
            String[] args) {
        if (cmd.getName().equalsIgnoreCase("pets")) {
            if (sender instanceof Player) {
                Player p = (Player) sender;
                if (args.length == 0) {
                    p.sendMessage(ChatColor.RED + "Cow, pig, sheep");
                } else if (args.length == 1) {
                    String name = getConfig().getString(
                            p.getName() + "pet name");
                    name = ChatColor.translateAlternateColorCodes('&', name);
                    for (Entity en : p.getNearbyEntities(100, 100, 100)) {
                        if (en.hasMetadata(p.getName() + "pet")) {
                            en.remove();
                        }
                    }
                    if (args[0].equalsIgnoreCase("cow")) {
                        Cow c = (Cow) p.getWorld().spawnEntity(p.getLocation(),
                                EntityType.COW);
                        c.setTarget(p);
                        c.setMetadata(p.getName() + "pet",
                                new FixedMetadataValue(this, 1));
                        p.sendMessage(ChatColor.GREEN
                                + "Your cow pet was spawned!");
                    }
                    if (args[0].equalsIgnoreCase("pig")) {
                        Pig pi = (Pig) p.getWorld().spawnEntity(
                                p.getLocation(), EntityType.PIG);
                        pi.setTarget(p);
                        pi.setMetadata(p.getName() + "pet",
                                new FixedMetadataValue(this, 1));
                        p.sendMessage(ChatColor.GREEN
                                + "Your pig pet was spawned!");
                    }
                    if (args[0].equalsIgnoreCase("sheep")) {
                        Sheep sh = (Sheep) p.getWorld().spawnEntity(
                                p.getLocation(), EntityType.SHEEP);
                        sh.setTarget(p);
                        sh.setMetadata(p.getName() + "pet",
                                new FixedMetadataValue(this, 1));
                        p.sendMessage(ChatColor.GREEN
                                + "Your sheep pet was spawned!");
                    }
                    if (args[0].equalsIgnoreCase("name")) {
                        String s = args[1];
                        getConfig().set(p.getName() + "pet name", s);
                    }
                }
            } else {
            sender.sendMessage(ChatColor.RED + "this is for players only");  
            }          
        }
        return true;
    }

}

 

@vhbob http://bukkit.org/threads/how-to-re...ubleshoot-your-own-plugins-by-yourself.32457/ Find the line in stack trace. Debug.