Method invocation 'setExecutor' may produce 'NullPointerException'

Hello, sorry for asking this but I'm starting to learn how to develop minecraft plugins and I've been following some tutorials over youtube, unfortunately most of them are outdated so... I'm here...

Ok my problem is that the plugin is throwing Method invocation 'setExecutor' may produce 'NullPointerException' and it reffers to the line:

getCommand("brtp").setExecutor(new Teleport());

Console ERROR:

[12:23:20] [Server thread/ERROR]: Error occurred while enabling FairTPA v1.0-SNAPSHOT (Is it up to date?)
java.lang.NullPointerException: null

I've been looking for a fix over the internet but all outdated... I'd be very thanksful for a little hand here guys, thank you.

My full code of Main.java:

Code:

package me.brlesskoin.fairtpa;[/COLOR][/SIZE][/FONT][/B][/I]
[FONT=Arial][SIZE=4][COLOR=#808080]
[I][B]
import me.brlesskoin.fairtpa.commands.Teleport;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin {

    public static final String TEXT_YELLOW;

    static {
        TEXT_YELLOW = "\u001B[33m";
    }

    public static final String RESET;

    static {
        RESET = "\033[0m";
    }

    @Override
    public void onEnable() {
        System.out.println(TEXT_YELLOW + "=============================================" + RESET);
        System.out.println(TEXT_YELLOW + "= " + RESET + "Fair Teleport ha sido activado" + TEXT_YELLOW + " =" + RESET);
        System.out.println(TEXT_YELLOW + "=============================================" + RESET);

        getCommand("brtp").setExecutor(new Teleport());
    }
}

My full code of Teleport.java:

Code:

package me.brlesskoin.fairtpa.commands;


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 Teleport implements CommandExecutor {
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {

        if (sender instanceof Player){

            Player player = (Player) sender;

            if (args.length == 0) {
                player.sendMessage(ChatColor.RED + "Debes especificar a quien iras a teleportarte.");
                player.sendMessage(ChatColor.YELLOW + "El uso correcto es /brtp [NOMBRE]");
            } else if (args.length == 1) {
                Player target = Bukkit.getPlayer(args[0]);

                player.teleport(target.getLocation());
            }

        }
        return true;
    }
}

My full code of plugin.yml:

Code:

name: FairTPA
version: 1.0 BETA
author: Brlesskoin
main: com.brlesskoin.fairtpa.main
api-version: 1.18.2
commands:
  brtp:
    description: Teleports player
    usage: /<command>

 

Is exactly the same in both files command name "brtp" take a look to the codes I've posted and the error is being thrown by "setExecutor"

 

@Brlesskoin
Can you show the full stacktrace?

 

This is the full console error guys

Code:

[12:46:22] [Server thread/ERROR]: Error occurred while enabling FairTPA v1.0-SNAPSHOT (Is it up to date?)
java.lang.NullPointerException: Cannot invoke "org.bukkit.command.PluginCommand.setExecutor(org.bukkit.command.CommandExecutor)" because the return value of "me.brlesskoin.fairtpa.Main.getCommand(String)" is null
        at me.brlesskoin.fairtpa.Main.onEnable(Main.java:26) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[spigot-api-1.18.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_18_R1.CraftServer.enablePlugin(CraftServer.java:521) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at org.bukkit.craftbukkit.v1_18_R1.CraftServer.enablePlugins(CraftServer.java:435) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:612) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:414) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:262) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:994) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.18.1-R0.1-SNAPSHOT.jar:3443-Spigot-699290c-2c1e499]
        at java.lang.Thread.run(Thread.java:833) [?:?]

Seems that the problem comes from the Teleport.java class, it shows the warning

Not annotated parameter overrides @NotNull parameter in line

@Overridepublic boolean onCommand(CommandSender sender, Command command, String label, String[] args)

 

I'm using IntelliJ and the structure was providen by the plugin of the IDE for making Spigot projects

 

Well there was ANOTHER copy of plugin.yml... dunno why, I didn't even created none of both, I've edited it to match everything but the error still remains...

Mod please close the thread...

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

 

Check the plugin.yml that is in the actual exported jar to see if it is right. Also

Code:

public static final String TEXT_YELLOW;

static {
TEXT_YELLOW = "\u001B[33m";
}

public static final String RESET;

static {
RESET = "\033[0m";
}

Why are you setting the value like that? If you want to make a string constant, just do like

Code:

public static final String VAR = "blah";

Also

Code:

Player target = Bukkit.getPlayer(args[0]);

player.teleport(target.getLocation());

Don't assume the person entered a valid player. Always assume any data coming in is invalid and act accordingly. e.g.

Code:

Player target = Bukkit.getPlayer(args[0]);
if (target == null) {
  player.sendMessage(ChatColor.RED + "That isn't a valid player!");
  return true;
}

player.teleport(target.getLocation());

 

Thank you, I'll fix those and keep trying