Problems by permissionsEx variable

Hi, i'm programming a plugin (called Usersystem) and need to get the Prefix vom the command sender
from PermissionsEx. This is for first no problem (thanks to dadaemon
) but now i'm becoming a big error when i include the same syntax i used in event handler.
-> he says that i do a nullpointer exeption but the "player" variable i could use like ever

Code:

2012-01-02 11:12:24 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'war' in plugin blocknet-usersystem v0.1
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:165)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:378)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
    at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
Caused by: java.lang.NullPointerException
    at me.Proctor.usersystem.usersystemCommandExecutor.onCommand(usersystemCommandExecutor.java:47)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
    ... 12 more

My main Class:

Code:

package me.Proctor.usersystem;

import java.util.logging.Logger;

import org.bukkit.Bukkit;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Event;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

import ru.tehkode.permissions.PermissionManager;
import ru.tehkode.permissions.bukkit.PermissionsEx;

public class usersystem extends JavaPlugin {
    int i = 1;
    boolean vote_sun, vote_day, vote_jail;
    private usersystemEntityListener entityListener;
    private usersystemPlayerListener playerListener;
    private usersystemCommandExecutor usersystemCommandExecutor;
    Logger log = Logger.getLogger("Minecraft");
    public void onEnable(){
        if(Bukkit.getServer().getPluginManager().isPluginEnabled("PermissionsEx")){
            entityListener = new usersystemEntityListener(this);
            playerListener = new usersystemPlayerListener();
            PluginManager pm = this.getServer().getPluginManager();
            pm.registerEvent(Event.Type.ENTITY_DAMAGE, entityListener, Event.Priority.High, this);
            pm.registerEvent(Event.Type.PLAYER_CHAT, playerListener, Event.Priority.Normal, this);
            usersystemCommandExecutor = new usersystemCommandExecutor(this);
            getCommand("war").setExecutor(usersystemCommandExecutor);
            getCommand("unwar").setExecutor(usersystemCommandExecutor);
            getCommand("getwar").setExecutor(usersystemCommandExecutor);
            log.info("[blocknet-Usersystem] version " + this.getDescription().getVersion() + "has been enabled.");
            log.info("[blocknet-Usersystem] (c) Aron Heinecke");
        }
        else {
            log.info("[blocknet-Usersystem] didn't find PermissionsEx; version " + this.getDescription().getVersion());
        }
    }
    public void onDisable(){
        log.info("[blocknet-Usersystem] has been disabled.");
    }
}

My "usersystemCommandExecutor":

Code:

package me.Proctor.usersystem;

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

import ru.tehkode.permissions.PermissionManager;
import ru.tehkode.permissions.bukkit.PermissionsEx;

public class usersystemCommandExecutor implements CommandExecutor {
    int warbetw = -1;
    boolean iswar = false;

    PermissionManager pex = PermissionsEx.getPermissionManager();

        public usersystemCommandExecutor(usersystem plugin){
        this.plugin = plugin;
    }
    private usersystem plugin;

    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args ){
        sender.sendMessage( command.toString() );
        if ( sender instanceof Player ) {
            if ( command.getName().equals("war")) {
                if ( getwar() == true ){

                }
                else {
                    String s;
                    String r;
                    Player player = (Player) sender;
                    sender.sendMessage("trying..");
                    sender.sendMessage(pex.toString());
                    s = pex.getUser(((Player) sender).getPlayer()).getOwnPrefix();  // HERE he says the null pointer exeption comes
                    sender.sendMessage("catching..");
                    if ( s == "Elfen" ) {
                        r = "Dunkelelfen";
                        setwarbtw(2);
                        sender.sendMessage("You have started a war between " + s + " & " + r );
                        }
                    if ( s.equals("Dunkelelfen") ) { r = "Elfen"; setwarbtw(2); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Vampiren") ) { r = "Nymphen"; setwarbtw(1); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Nymphen") ) { r = "Vampiren"; setwarbtw(1); sender.sendMessage("You have started a war between" + s + " & " + r );; }
                    if ( s.equals("Engeln") ) { r = "Dämonen"; setwarbtw(0); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Dämonen") ) { r = "Engeln"; setwarbtw(0); sender.sendMessage("You have started a war between" + s + " & " + r ); }

                }
            }
            if ( command.getName().equals("unwar") ) {

            }
            if ( command.getName().equals("getwar") ){
                if ( getwar() == true ) {
                    String s;
                    switch ( warbetw ) {
                    case 0:
                        s = "Dämonen & Engeln";
                        break;
                    case 1:
                        s = "Vampiren & Nymphen";
                        break;
                    case 2:
                        s = "Dunkelelfen & Elfen";
                        break;
                    default:
                        s = "Error, unhandelet int " + warbetw;
                    }
                    sender.sendMessage( "There is a war between " + s + "!" );
                }
                else {
                    sender.sendMessage("There is no war at time.");
                }
            }
        }
            return false;
    }
    public void setwar ( boolean iswar ){
        this.iswar = iswar;
    }
    public boolean getwar(){
        return iswar;
    }
    public void setwarbtw( int i ){
        warbetw = i;
    }
    public void setplwar ( String name ){
        String[] died;

    }
    public void sendwarmsg ( String frak1, String frak2, Player player ){
        PermissionManager pex = PermissionsEx.getPermissionManager();
        Player[] list1;
        list1 = Bukkit.getServer().getOnlinePlayers();
        for ( int i = 0; i <= list1.length; i++ ){
            if ( list1[i] == player ){
                break;
            }
            if ( pex.getUser(list1[i].getName()).getOwnPrefix().toString().equals(frak1) ){
                list1[i].sendMessage("A war has been started between your fraktion &" + frak2 + "!");
                list1[i].sendMessage("Type /war to join & help your Team.");
            }
            if ( pex.getUser(list1[i].getName()).getOwnPrefix().toString().equals(frak2) ){
                list1[i].sendMessage("A war has been started between your fraktion &" + frak1 + "!");
                list1[i].sendMessage("Type /war to join & help your Team.");
            }
        }
    }
    public void startwar ( CommandSender sender ){
        String s;
        String r;
        Player player = (Player) sender;
        player.sendMessage("trying..");
        player.sendMessage(pex.getUser(player.getName()).getOwnPrefix());
        s = pex.getUser(sender.getName()).getOwnPrefix();
        player.sendMessage("catching..");
        if ( s == "Elfen" ) {
            r = "Dunkelelfen";
            setwarbtw(2);
            player.sendMessage("You have started a war between " + s + " & " + r );
            }
        if ( s.equals("Dunkelelfen") ) { r = "Elfen"; setwarbtw(2); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Vampiren") ) { r = "Nymphen"; setwarbtw(1); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Nymphen") ) { r = "Vampiren"; setwarbtw(1); player.sendMessage("You have started a war between" + s + " & " + r );; }
        if ( s.equals("Engeln") ) { r = "Dämonen"; setwarbtw(0); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Dämonen") ) { r = "Engeln"; setwarbtw(0); player.sendMessage("You have started a war between" + s + " & " + r ); }
    }
}

 

Code:

((Player) sender).getPlayer()

Is there such a method? Player.getPlayer()?

Anyway that wouldn't throw a NPE.
Assign the return values to variables and check which one is null instead of chaining the method calls.

 

i used the same method in another class, and yes, .getPlayer gives, and i done without too, and it did the same fail

ok, i done this:

Code:

    public boolean onCommand(CommandSender sender, Command command, String label, String[] args ){
        sender.sendMessage( command.toString() );
        if ( sender instanceof Player ) {
            if ( command.getName().equals("war")) {
                if ( getwar() == true ){

                }
                else {
                    String s = "";
                    String r;
                    Player player = (Player) sender;
                    sender.sendMessage("trying..");
                    //s = pex.getUser(((PermissionUser) sender).getOwnPrefix();
                    s = pex.getUser( sender.getName() ).getOwnPrefix();
                    sender.sendMessage("trying..");
                    sender.sendMessage( s ); // this is line 43 -> error

but is gives same nullpointer exception:

Code:

mind.com/.
2012-01-03 19:12:10 [INFO] [PermissionsEx] Superperms support enabled.
2012-01-03 19:12:10 [INFO] [PermissionsEx] v1.17 enabled
2012-01-03 19:12:10 [INFO] Essentials: Using PermissionsEx based permissions.
2012-01-03 19:12:10 [INFO] WorldEdit 4.7 enabled.
2012-01-03 19:12:10 [SEVERE] WorldEdit: Unable to read default configuration: config.yml
2012-01-03 19:12:10 [INFO] WorldEdit: PermissionsEx detected! Using PermissionsEx for permissions.
2012-01-03 19:12:10 [INFO] [blocknet-Usersystem] version 0.1has been enabled.
2012-01-03 19:12:10 [INFO] [blocknet-Usersystem] (c) Aron Heinecke
2012-01-03 19:12:10 [INFO] [ChatManager] ChatManager disabled. Check config.yml!
2012-01-03 19:12:10 [INFO] [ChatManager] ChatManager disabled!
2012-01-03 19:12:10 [INFO] [Modifyworld] Modifyworld disabled. Check config.yml!
2012-01-03 19:12:10 [INFO] [Modifyworld] Modifyworld disabled!
2012-01-03 19:12:10 [INFO] [PermissionsCompat] Compatibility layer enabled.
2012-01-03 19:12:10 [INFO] WorldEdit: PermissionsEx detected! Using PermissionsEx for permissions.
2012-01-03 19:12:10 [INFO] Server permissions file permissions.yml is empty, ignoring it
2012-01-03 19:12:10 [INFO] Reload complete.
2012-01-03 19:12:12 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'war' in plugin blocknet-usersystem v0.1
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:165)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:378)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
    at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
Caused by: java.lang.NullPointerException
    at me.Proctor.usersystem.usersystemCommandExecutor.onCommand(usersystemCommandExecutor.java:50)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
    ... 12 more

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

 

What's line 50 ("(usersystemCommandExecutor.java:50)")?

 

here the actuel stat:

Code:

2012-01-03 23:08:17 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'war' in plugin blocknet-usersystem v0.1
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:165)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:378)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
    at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
Caused by: java.lang.NullPointerException
    at org.bukkit.craftbukkit.TextWrapper.wrapText(TextWrapper.java:34)
    at net.minecraft.server.NetServerHandler.sendPacket(NetServerHandler.java:671)
    at org.bukkit.craftbukkit.entity.CraftPlayer.sendRawMessage(CraftPlayer.java:119)
    at org.bukkit.craftbukkit.entity.CraftPlayer.sendMessage(CraftPlayer.java:123)
    at me.Proctor.usersystem.usersystemCommandExecutor.onCommand(usersystemCommandExecutor.java:43)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
    ... 12 more

Code:

package me.Proctor.usersystem;

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

import ru.tehkode.permissions.PermissionManager;
import ru.tehkode.permissions.PermissionUser;
import ru.tehkode.permissions.bukkit.PermissionsEx;

public class usersystemCommandExecutor implements CommandExecutor {
    int warbetw = -1;
    boolean iswar = false;

    PermissionManager pex = PermissionsEx.getPermissionManager();

        public usersystemCommandExecutor(usersystem plugin){
        this.plugin = plugin;
    }
    private usersystem plugin;

    public boolean onCommand(CommandSender sender, Command command, String label, String[] args ){
        sender.sendMessage( command.toString() );
        if ( sender instanceof Player ) {
            if ( command.getName().equals("war")) {
                if ( getwar() == true ){

                }
                else {
                    String s = "";
                    String r;
                    Player player = (Player) sender;
                    sender.sendMessage("trying..");
                    //s = pex.getUser(((PermissionUser) sender).getOwnPrefix();
                    s = pex.getUser( sender.getName() ).getOwnPrefix();
                    sender.sendMessage("trying..");
                    sender.sendMessage( s );                                         // line 43
                    sender.sendMessage("catching..");
                    if ( s == "Elfen" ) {
                        r = "Dunkelelfen";
                        setwarbtw(2);
                        sender.sendMessage("You have started a war between " + s + " & " + r );
                        }
                    if ( s.equals("Dunkelelfen") ) { r = "Elfen"; setwarbtw(2); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Vampiren") ) { r = "Nymphen"; setwarbtw(1); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Nymphen") ) { r = "Vampiren"; setwarbtw(1); sender.sendMessage("You have started a war between" + s + " & " + r );; }
                    if ( s.equals("Engeln") ) { r = "Dämonen"; setwarbtw(0); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                    if ( s.equals("Dämonen") ) { r = "Engeln"; setwarbtw(0); sender.sendMessage("You have started a war between" + s + " & " + r ); }
                }
            }
            if ( command.getName().equals("unwar") ) {

            }
            if ( command.getName().equals("getwar") ){
                if ( getwar() == true ) {
                    String s;
                    switch ( warbetw ) {
                    case 0:
                        s = "Dämonen & Engeln";
                        break;
                    case 1:
                        s = "Vampiren & Nymphen";
                        break;
                    case 2:
                        s = "Dunkelelfen & Elfen";
                        break;
                    default:
                        s = "Error, unhandelet int " + warbetw;
                    }
                    sender.sendMessage( "There is a war between " + s + "!" );
                }
                else {
                    sender.sendMessage("There is no war at time.");
                }
            }
        }
            return false;
    }
    public void setwar ( boolean iswar ){
        this.iswar = iswar;
    }
    public boolean getwar(){
        return iswar;
    }
    public void setwarbtw( int i ){
        warbetw = i;
    }
    public void setplwar ( String name ){
        String[] died;

    }
    public void sendwarmsg ( String frak1, String frak2, Player player ){
        PermissionManager pex = PermissionsEx.getPermissionManager();
        Player[] list1;
        list1 = Bukkit.getServer().getOnlinePlayers();
        for ( int i = 0; i <= list1.length; i++ ){
            if ( list1[i] == player ){
                break;
            }
            if ( pex.getUser(list1[i].getName()).getOwnPrefix().toString().equals(frak1) ){
                list1[i].sendMessage("A war has been started between your fraktion &" + frak2 + "!");
                list1[i].sendMessage("Type /war to join & help your Team.");
            }
            if ( pex.getUser(list1[i].getName()).getOwnPrefix().toString().equals(frak2) ){
                list1[i].sendMessage("A war has been started between your fraktion &" + frak1 + "!");
                list1[i].sendMessage("Type /war to join & help your Team.");
            }
        }
    }
    public void startwar ( CommandSender sender ){
        String s;
        String r;
        Player player = (Player) sender;
        player.sendMessage("trying..");
        player.sendMessage(pex.getUser(player.getName()).getOwnPrefix());
        s = pex.getUser(sender.getName()).getOwnPrefix();
        player.sendMessage("catching..");
        if ( s == "Elfen" ) {
            r = "Dunkelelfen";
            setwarbtw(2);
            player.sendMessage("You have started a war between " + s + " & " + r );
            }
        if ( s.equals("Dunkelelfen") ) { r = "Elfen"; setwarbtw(2); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Vampiren") ) { r = "Nymphen"; setwarbtw(1); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Nymphen") ) { r = "Vampiren"; setwarbtw(1); player.sendMessage("You have started a war between" + s + " & " + r );; }
        if ( s.equals("Engeln") ) { r = "Dämonen"; setwarbtw(0); player.sendMessage("You have started a war between" + s + " & " + r ); }
        if ( s.equals("Dämonen") ) { r = "Engeln"; setwarbtw(0); player.sendMessage("You have started a war between" + s + " & " + r ); }
    }
}

 

pls help me, i used same syntax

Code:

pex.getUser( sender.getName() ).getOwnPrefix();

in an event-handler (for example onEntityDamage) and it worked, and here,
when i use it, he says nullpointerexception with the variable, s who have the ürefix inside...

 

Check if s is null.

 

ok, i do know, but why it should be :O
cause i used it in entity listener so:
Player p1 = (Player) damageEvent.getDamager();
pex.getUser(p1.getName()).getOwnPrefix()
and yes, it's NULL (but it is same like up, only that i use (Player) sender & not damageEvent.getDamager().
What should i do? And thanks for your help.

 

Same player and your PEX config/settings didn't change?

 

yes, and the player ((Player) sender) it gives, i check before if (sender is instanceof player), and i could let him print my right name but pex gives null

 

NO, it's NOT wirking in the other side i seen now, it gives NULL too in the event, but i've never seen it, cause i done a

Code:

´if ( pex.getUser(p1.getName()).getOwnPrefix() == pex.getUser(p2.getName()).getOwnPrefix() ) {

and i didnt tested with when player in other group's, i did again, and seen now, that it gives NULL there too :O
AND i know why, i thought, he gives the prefix the player have cause he's in a gorup with prefix, but he says NULL, cause the player have no OWNprefix

i'm a littlebit confused, cause i could only letmegive all group's the player have-> new variable->more needet resources, but ok

Thanks for your help, if there where a documentation for this permissionsex api ( and not only this 1 site, which doesnt includes all what you need for only including the api) i think i've never become this problem

i've one other problem, i want to teleport a player to a defined location, could you say me how i declare a Location variable?

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

 

I think it's new Location(world, x, y, z)

 

hm, i tried different ways could you pls gimme a example?
(if the world position is 0, 0, 0, world name = world1), thanks

 

Code:

World world = Bukkit.getServer().getWorld("world1");
//or world = player.getWorld();
//or whatever
Location loc = new Location(world,0,0,0);

 

ok, thanks, that's what i need cause i want to teleport a player if he says /spec to a defined position in a specific world to ,et him spectator something

Ok, that's at time all, now i've to look how i use the config.yml from my plugin for a global variable cause between command-handler and entityevent-handler i could not declare a variable both could read/write.. (i hate arrays/lists in java)

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