Need help with "HEAL plugin"

Hi! I was wondering, If someone could help me, I was making a heal plugin, I was trying to set up permissions for it, but this is my first time, and it doesn't want to work : soooo it has a line under 'e' of e .setCancelled(true);
here is the code on my main

Code:

package me.demonicrin;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.permissions.Permission;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class main extends JavaPlugin {
   
    public Permission playerPermissions = new Permission("nova.heal");
                                                     
       
   
    @Override
    public void onEnable(){
        getLogger().info("Killheal has been enabled!");
            new PlayerListener(this);
            PluginManager pm = getServer().getPluginManager();
            pm.addPermission(playerPermissions);
           
    }

    @Override
    public void onDisable(){
       
    }
   
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
       
        if (cmd.getName().equalsIgnoreCase("heal") && sender instanceof Player){
           
            Player player = (Player)sender;
           
            if(!player.hasPermission("nova.heal")){
                e.setCancelled(true);
               
            }
           
            player.setHealth(20.0);
           
            player.setFoodLevel(20);
           
            player.sendMessage(ChatColor.AQUA + "You have been healed!");
           
        }
        return false;
    }
}

for my listener

Code:

package me.demonicrin;

import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.event.player.PlayerJoinEvent;

public class PlayerListener implements Listener {
                                                     
       
        public PlayerListener(main plugin){                                                       
            plugin.getServer().getPluginManager().registerEvents(this, plugin);  

    }
   
    @EventHandler
    public void onJoin(PlayerJoinEvent e){
        Player player = e.getPlayer();
       
        player.sendMessage(ChatColor.BLUE + "Welcome, " + player.getName() + "! " + "Hope you enjoy your stay!" );
    }                                                                                                 
   
    @EventHandler
    public void onPlayerDeath(PlayerDeathEvent e){
    Player pp = e.getEntity();
    Player killed = pp.getKiller();
    killed.setHealth(killed.getHealth()+6);
    killed.sendMessage(ChatColor.GREEN + "you got 3 hearts for killing " + ChatColor.BLUE + pp.getName());
   
    }
}

 

Class names should start with an upper case letter.

Use Player#hasPermission( Permission) to test if the player has the permission.

 

WHAT?

 

[Edit] Realized your problem wasn't with setting up permissions. Your problem is that "e" does not exist because "onCommand" is not an event, nor is there any variable called "e". You cannot cancel a command through onCommand, but you can use CommandPreProcessEvent and check and cancel that.

 

10/10 feedback

That's called an error, I believe. If you hover over it, it'll tell you why!
Also, you are executing "e.setCancelled()" in a command method, use something like "return false;" or something similar.