public class Manager {

    //You use this set to cache (store) all your data.
    //We declare the set here.
    private final Set<Encapsulation> encapsulationSet;
    private final JavaPlugin javaPlugin;

    //We are setting the plugin data to the variable
    public Manager(JavaPlugin javaPlugin) {
        this.javaPlugin = javaPlugin;
        //Initialise the set.
        this.encapsulationSet = new HashSet<>();
    }

    //We are going to load all the data from file and put it in the set.
    public void load() {
        //Remember all the keys from the configuration is made into a set.
        FileConfiguration configuration = javaPlugin.getConfig();
        Set<String> data = configuration.getConfigurationSection("Players").getKeys(false);
        //We use lambda here, the "s" is a string variable. Kinda like the variable from the for loop
        data.forEach(s -> {
            String[] split = s.split(":");
            encapsulationSet.add(new Encapsulation(
                    UUID.fromString(split[0]),
                    Integer.parseInt(split[1]),
                    Integer.parseInt(split[2])
            ));
        });

        //Yay we have loaded all the data
    }

    public void unload() {
        //We iterate through each element that we have saved in the set.
        FileConfiguration configuration = javaPlugin.getConfig();
        //We create a new string list
        List<String> data = new ArrayList<>();
        //Add all the elements (player storage) from the set to the list
        encapsulationSet.forEach(encapsulation -> data.add(encapsulation.toString()));
        //Set the player configuration to the list that we have.
        configuration.set("Players", data);
    }

    public Encapsulation getEncapsulation(UUID uuid) {
        for(Encapsulation encapsulation : encapsulationSet) {
            if(encapsulation.getUuid().equals(uuid)) {
                return encapsulation;
            }
        }
        return null;
    }
}