1. public class Manager {
2.  
3.     //You use this set to cache (store) all your data.
4.     //We declare the set here.
5.     private final Set<Encapsulation> encapsulationSet;
6.     private final JavaPlugin javaPlugin;
7.  
8.     //We are setting the plugin data to the variable
9.     public Manager(JavaPlugin javaPlugin) {
10.         this.javaPlugin = javaPlugin;
11.         //Initialise the set.
12.         this.encapsulationSet = new HashSet<>();
13.     }
14.  
15.     //We are going to load all the data from file and put it in the set.
16.     public void load() {
17.         //Remember all the keys from the configuration is made into a set.
18.         FileConfiguration configuration = javaPlugin.getConfig();
19.         Set<String> data = configuration.getConfigurationSection("Players").getKeys(false);
20.         //We use lambda here, the "s" is a string variable. Kinda like the variable from the for loop
21.         data.forEach(s -> {
22.             String[] split = s.split(":");
23.             encapsulationSet.add(new Encapsulation(
24.                     UUID.fromString(split[0]),
25.                     Integer.parseInt(split[1]),
26.                     Integer.parseInt(split[2])
27.             ));
28.         });
29.  
30.         //Yay we have loaded all the data
31.     }
32.  
33.     public void unload() {
34.         //We iterate through each element that we have saved in the set.
35.         FileConfiguration configuration = javaPlugin.getConfig();
36.         //We create a new string list
37.         List<String> data = new ArrayList<>();
38.         //Add all the elements (player storage) from the set to the list
39.         encapsulationSet.forEach(encapsulation -> data.add(encapsulation.toString()));
40.         //Set the player configuration to the list that we have.
41.         configuration.set("Players", data);
42.     }
43.  
44.     public Encapsulation getEncapsulation(UUID uuid) {
45.         for(Encapsulation encapsulation : encapsulationSet) {
46.             if(encapsulation.getUuid().equals(uuid)) {
47.                 return encapsulation;
48.             }
49.         }
50.         return null;
51.     }
52. }