Main.java

package fr.revivemc;

import fr.revivemc.data.Cache;
import fr.revivemc.events.EntityDamageListener;
import fr.revivemc.events.EntityDeathListener;
import fr.revivemc.events.EntityRegenListener;
import fr.revivemc.events.PlayerJoinListener;
import fr.revivemc.data.Sql;
import fr.revivemc.yaml.ConfigYaml;
import fr.revivemc.yaml.LangYaml;
import org.bukkit.Bukkit;
import org.bukkit.plugin.java.JavaPlugin;

import java.io.File;
import java.util.HashMap;
import java.util.UUID;

public class Main extends JavaPlugin {

    /**
     * Configuration variable, lang or data
     */
    public static ConfigYaml config_yaml;
    public static LangYaml lang_yaml;
    public static Sql sql;

    // Variable for the cache
    public static HashMap<UUID, Cache> cache;

    /**
     * Create the plugin folder if it hasn't been created
     */
    private void loadDataFolder() {
        File data_folder = Main.getPlugin(Main.class).getDataFolder();

        if (!data_folder.exists())
            data_folder.mkdir();
    }

    /**
     * Server Startup
     */
    @Override
    public void onEnable() {
        loadDataFolder();

        sql = new Sql();
        sql.init();

        config_yaml = new ConfigYaml();
        config_yaml.init();

        lang_yaml = new LangYaml();
        lang_yaml.init();

        cache = new HashMap<>();

        Bukkit.getPluginManager().registerEvents(new PlayerJoinListener(), this);
        Bukkit.getPluginManager().registerEvents(new EntityDeathListener(), this);
        Bukkit.getPluginManager().registerEvents(new EntityDamageListener(), this);
        Bukkit.getPluginManager().registerEvents(new EntityRegenListener(), this);
        System.out.println("Plugin enabled");
    }

    /**
     * Server Stop
     */
    @Override
    public void onDisable() {
        sql.saveData();
        sql.close();

        System.out.println("Plugin disabled");
    }

}