Main.java

package me.tmp.test;

import com.google.common.collect.Lists;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.bukkit.Material;
import org.bukkit.command.CommandExecutor;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

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

/**
 * Created by TheMasteredPanda on 21/01/2017.
 */

public class Main extends JavaPlugin implements CommandExecutor, Listener
{
    private Gson gson = new GsonBuilder().setPrettyPrinting().create();
    private List<Listing> listings = Lists.newArrayList();
    private AHPlayer player;

    @Override
    public void onEnable()
    {
        if (!this.getDataFolder().exists()) {
            this.getDataFolder().mkdir();
        }

        for (int i = 0; i < 10; i++) {
            listings.add(new Listing(i, new ItemStack(Material.APPLE), UUID.randomUUID(), UUID.randomUUID(), 100L, 1000L, 10L, 9000000000F, false));
            Listing listing = listings.get(i);
            File f = new File(this.getDataFolder(), i + ".txt");

            if (!f.exists()) {
                f.mkdir();
            }

            try {
                FileWriter writer = new FileWriter(f);
                writer.write(gson.toJson(listing));
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent e)
    {
        this.player = new AHPlayer(e.getPlayer().getUniqueId(), Lists.newLinkedList(listings), Lists.newArrayList(new UUID[]{UUID.randomUUID(), UUID.randomUUID(), UUID.randomUUID()}), listings, 10000L, 20, 10, false);

        File f = new File(this.getDataFolder(), this.player.getPlayerUUID() + ".json");

        if (!f.exists()) {
            f.mkdir();
        }

        try {
            FileWriter writer = new FileWriter(f);
            writer.write(gson.toJson(this.player));
            writer.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }


}