KitPlayer.java

package com.lastabyss.psciv.util;

import org.bukkit.Bukkit;
import org.bukkit.OfflinePlayer;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

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

/**
 * @author Navid
 */
public class KitPlayer {

    private UUID uniqueId;
    private YamlConfiguration data;
    private Kit kit;

    public KitPlayer(Player player) {
        uniqueId = player.getUniqueId();

        File dataFile = new File(YourPlugin.instance.getDataFolder(), uniqueId.toString() + ".yml");
        if (!dataFile.exists()) try {
            dataFile.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
        }

        data = YamlConfiguration.loadConfiguration(dataFile);
    }

    public void loadKit() {
        //TODO: Do loading here
        kit = YourCacheClass.loadKit(this);
    }

    public void saveKit() {
        //TODO: Do saving here
        YourCacheClass.saveKit(this);
    }

    public UUID getUniqueId() {
        return uniqueId;
    }

    public YamlConfiguration getData() {
        return data;
    }

    /**
     * Returns an offline player that has this uniqueId.
     *
     * @return
     */
    public OfflinePlayer getPlayer() {
        Player player = Bukkit.getPlayer(uniqueId);
        if (player == null) {
            return Bukkit.getOfflinePlayer(uniqueId);
        }
        return player;
    }

    public Kit getKit() {
        return kit;
    }

    public void setKit(Kit kit) {
        this.kit = kit;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof KitPlayer) {
            return ((KitPlayer) obj).getUniqueId().equals(this.getUniqueId());
        } else return super.equals(obj);
    }
}

class Kit {
    private ItemStack[] contents;
    private ItemStack[] armor;
}