Delete and create a new world on command

I want to delete a world and create a new world with the same name. Before that all players get teleported to a location on a other world. This is not working any ideas?

Code:

public class ResetCommand implements CommandExecutor{

    private main plugin;
  
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        Player p = (Player) sender;
      
      

            FileConfiguration config = main.getPlugin().getConfig();
            World worldtp = Bukkit.getWorld(config.getString("Spawn.World"));
            double x = config.getDouble("Spawn.X");
            double y = config.getDouble("Spawn.Y");
            double z = config.getDouble("Spawn.Z");
            float yaw = (float) config.getDouble("Spawn.Yaw");
            float pitch = (float) config.getDouble("Spawn.Pitch");
            Location location = new Location(worldtp, x, y, z, yaw, pitch);
            World world = p.getWorld();
            for(Player player : Bukkit.getOnlinePlayers()){
                player.teleport(location);
            }
          
            String worldName = world.getName();
           
            if (!Bukkit.unloadWorld(world, false)) return false;
           
            File worldFolder = new File(plugin.getDataFolder().getParentFile().getParentFile(), worldName);
            worldFolder.delete();
           
            Bukkit.createWorld(new WorldCreator(worldName));
      
        return false;
    }
  
  
}

 

@MiBB3L Try debugging, where does it stop?

 

It stops after the players got teleported.

 

@MiBB3L Then the Bukkit#unloadWorld(...) call is returning false.

 

But why? I use the world, where the player stands. It can´t returning false

Okay now I done it like that

Code:

@Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        Player p = (Player) sender;
       
        System.out.println("1");

            FileConfiguration config = main.getPlugin().getConfig();
            World worldtp = Bukkit.getWorld(config.getString("Spawn.World"));
            double x = config.getDouble("Spawn.X");
            double y = config.getDouble("Spawn.Y");
            double z = config.getDouble("Spawn.Z");
            float yaw = (float) config.getDouble("Spawn.Yaw");
            float pitch = (float) config.getDouble("Spawn.Pitch");
            Location location = new Location(worldtp, x, y, z, yaw, pitch);
            World world = p.getWorld();
            for(Player player : Bukkit.getOnlinePlayers()){
                player.teleport(location);
                System.out.println("2");
            }
           
            String worldName = world.getName();
            
            if (!Bukkit.unloadWorld(world, false)) {
                System.out.println("2,5");
                return false; 
            }
            System.out.println("3");
           
            File worldFolder = new File(plugin.getDataFolder().getParentFile().getParentFile(), worldName);
            System.out.println("4");
            worldFolder.delete();
            System.out.println("5");
            
            Bukkit.createWorld(new WorldCreator(worldName));
            System.out.println("6");
       
        return false;
    }
   After "3" I get this error:
   
}

Code:

null
org.bukkit.command.CommandException: Unhandled exception executing command 'test' in plugin MiBB3L_Challenges v1.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_241]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_241]
    at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-db6de12-18fbb24]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]
Caused by: java.lang.NullPointerException
    at me.MiBB3L.challenges.ResetCommand.onCommand(ResetCommand.java:51) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
    ... 15 more

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

 

@MiBB3L What is line 51 in your ResetCommand class?
EDIT: Nevermind, 'plugin' is probably null, use your 'main' variable from above.

 

I use my "main" variable.

Code:

private main plugin;

 

@MiBB3L
Did you initalize your main variable ?
What is the line 51 ?

 

This is in Line 51

Code:

 File worldFolder = new File(plugin.getDataFolder().getParentFile().getParentFile(), worldName); 

I think I initliazed it, but could you look up in my code I´m not 100% sure.

 

@MiBB3L show the full class so, but it look like u haven't initialized it.
Create a constructor and pass an instance of your main class into it, then u can set ur varaible.

edit: nvm, i saw ur full class on the first post. Yes u dun initialize it

 

@MiBB3L I told you in this thread to fix that. Your problem is that you're using 'plugin' instead of 'main#getPlugin()'

 

Okay now I don´t get an error anymore, but the world gets not deleted. It gets unloaded and when I do a reload it gets back loaded. But a new world gets created too. (I use another worldname for the new worlds now)

Code:

public class ResetCommand implements CommandExecutor{
    public ResetCommand(main plugin) {
        this.plugin = plugin;
    }
    private main plugin;
    Random rand = new Random();


    int randomNum = rand.nextInt((100 - 2) + 1) + 2;
   
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        Player p = (Player) sender;
       

            FileConfiguration config = main.getPlugin().getConfig();
            World worldtp = Bukkit.getWorld(config.getString("Spawn.World"));
            double x = config.getDouble("Spawn.X");
            double y = config.getDouble("Spawn.Y");
            double z = config.getDouble("Spawn.Z");
            float yaw = (float) config.getDouble("Spawn.Yaw");
            float pitch = (float) config.getDouble("Spawn.Pitch");
            Location location = new Location(worldtp, x, y, z, yaw, pitch);
            World world = p.getWorld();
            for(Player player : Bukkit.getOnlinePlayers()){
                player.teleport(location);
            }
           
            String worldName = world.getName();
            
            if (!Bukkit.unloadWorld(world, false)) {
                return false; 
            }
           
            File worldFolder = new File(plugin.getDataFolder().getParentFile().getParentFile(), worldName);
            worldFolder.delete();
            String newWorldName = worldName + randomNum;
            
            Bukkit.createWorld(new WorldCreator(newWorldName));
       
        return false;
    }
   
   
}

@KarimAKL I didn´t understand what you mean, sorry.

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

 

@MiBB3L You still haven't fixed your main class name.

Is the world folder still there after you run the command?