Cooldown help?

After having to watch TheBCBroz for my plugin coding tutorials, I realize how inaccurate it is. So how do I use cooldowns? Here are my two classes for it that have errors:

MyCommandExecutor (Only acknowledge 'sptest4' & the beginning lines):

Code:

package me.TheLazeboy.superpowers;
 
import java.util.ArrayList;
 
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;
 
 
public class MyCommandExecutor implements CommandExecutor {
   
    private ArrayList<Player> cantDoCommand = new ArrayList<Player>();
   
    Countdown d = new Countdown();
   
    public MyCommandExecutor(Superpowers plugin) {
    }
 
 
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
   
        Player player = (Player) sender;
   
        if(cmd.getName().equalsIgnoreCase("sptest1")) {
       
            player.sendMessage(ChatColor.GOLD + "Sent!");
            return true;
        }
   
        if(cmd.getName().equalsIgnoreCase("spheal")) {
            if(player.hasPermission("superpowers.spheal")) {
            player.sendMessage(ChatColor.GREEN + "Healing!");
            player.addPotionEffect(new PotionEffect(PotionEffectType.REGENERATION, 1000, 1));
            return true;
        }
       
        if(cmd.getName().equalsIgnoreCase("sptest2")) {
            player.sendMessage(ChatColor.BOLD + "I AM A BOLD SENTENCE!");
            return true;
        }
       
        if(cmd.getName().equalsIgnoreCase("sptest3")) {
            player.sendMessage(ChatColor.AQUA + "Feed!");
            player.setFoodLevel(20);
            return true;
        }
       
        if(cmd.getName().equalsIgnoreCase("sptest4")) {
            if(!cantDoCommand.contains(player)) {
            sender.sendMessage(ChatColor.BLUE + "DONE!");
            cantDoCommand.add(player);
            d.setList(cantDoCommand);
            d.setPlayer(player);
            new Thread(d).start();
 
            return true;
        }
 
       
 
        return false;
}
        return false;}
        return false;}
 
}

MyCooldown:

Code:

package me.TheLazeboy.superpowers;
 
import java.util.ArrayList;
 
import org.bukkit.entity.Player;
 
public class MyCooldown implements Runnable {
   
    private ArrayList<Player> cantDoCommand = new ArrayList<Player>();
   
    Countdown d = new Countdown();
   
    public final Player player = null;
    public ArrayList<Player> cantDoCommand = new ArrayList<Player>();
   
    public void setPlayer(Player player) {
        player1 = player;
       
}
   
    public void setList(ArrayList<Player> list) {
        this.cantDoCommand = list;
}
   
    public ArrayList<Player> getList() {
        return cantDoCommand1;
    }
   
    public void run() {
        try{
            Thread.sleep(5000);
            cantDoCommand1.remove(player1);
}            catch (Exception ignored) {
       
}
}
}

And I don't have any knowledge about Java, plugin coding, and indents. So please refrain from using advanced terms. Thank you for help you may offer.

 

Don't save a player's instance to a HashMap, save their name. But here is a good resource on cooldowns, I recommend using it: http://forums.bukkit.org/threads/easycooldown.128219/

 

Thanks. I think I'll just hold off on cooldowns for now. That was a lot of complicated code lol.