Solved Cooldown without Scheduler

How do I integrate hours here. I want to make a Kit plugin and i have this already done, only a cooldown is missing. So i want something like this, but the hours missing. Please help

Code:

package main;

import java.io.File;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

/**
* Class created by MsGamerHD on 20.05.2016
*/
public class Main extends JavaPlugin{

    public static File confg;
    public static FileConfiguration cfg;
   
    @Override
    public void onEnable() {
        saveDefaultConfig();
       
        Main.confg = new File("plugins/Config", "config.yml");
        Main.cfg = YamlConfiguration.loadConfiguration(Main.confg);
       
    }
   
    @Override
    public void onDisable() {
        saveDefaultConfig();
    }
   
    /*
     * sek = ms/1000;
     * min = ms/1000/60;
     * std = ms/1000/60/60;
     * tag = ms/1000/60/60/24;
     */
   
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if(sender instanceof Player){
            Player p = (Player) sender;
           
            if(cmd.getName().equalsIgnoreCase("cd")){
                long jetzt = System.currentTimeMillis();
               
                if(cfg.contains("Cooldown."+p.getUniqueId()+"")){
                    long be = cfg.getLong("Cooldown."+p.getUniqueId()+"");
                   
                    int rest = (int) ((be + (5*1000*60)) - jetzt);
                   
                    if(rest > 0){
                        int minute = rest/1000/60;
                        rest = rest-(minute*1000*60);
                        int sekunde = rest/1000;
                       
                        p.sendMessage("§cDu musst noch warten: "+minute+(minute == 1 ? " Minute" : " Minuten") + " und "
                                +sekunde+(sekunde == 1 ? " Sekunde" : " Sekunden") + " warten.");
                        return true;
                    }
                }
                cfg.set("Cooldown."+p.getUniqueId()+"", jetzt);
               
                try {
                    cfg.save(confg);
                } catch (Exception e) {
                    // TODO: handle exception
                }
                p.sendMessage("§aDiese Funktion wurde ausgeführt.");
                return true;
            }
        }
        return false;
    }
   
}

 

Copy and pasting is not recommended.

Anyway, you can create a BukkitRunnable for this task.

 

You can just compare the milliseconds and discern the time difference with provided Java libraries. No need to overcomplicate.

 

@Kars answer is definitely what i would choose for a simple cooldown.:I'll try to explain how to use it a little bit.
So to add a cooldown to a player just store his UUID in a hashmap along with a Long (System.currentTimeMillis()).Then to check the cooldown you can calculate the cooldown that you want + the Long from the map / 1000 - System.currentTimeMillis() / 1000.This is for seconds,you can update it to hours if you want to