Simple Object Serializer

Serializer.java

import java.io.*;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by Erezbiox1 on 17/05/2017.
 * (C) 2016 Erez Rotem All Rights Reserved.
 */

public class Serializer {

    private final Map<String, Object> objects = new HashMap<>();

    private final String folderLocation;
    private final String suffix;

    public Serializer(String folderLocation, String suffix) {
        this.folderLocation = folderLocation;
        this.suffix = suffix;
    }

    public Serializer(String folderLocation) {
        this(folderLocation, "data");
    }

    public <T> T loadOrAdd(String key, Object object) {
        T newObject = loadRaw(getLocation(key));
        if (newObject == null)
            objects.put(key, object);
        else objects.put(key, newObject);

        return load(key);
    }

    public <T> boolean doesHave(String key){
        T object = loadRaw(getLocation(key));
        if(object == null)
            return false;

        objects.put(key, object);
        return true;
    }

    public <T> T load(String key) {
        return (T) objects.get(key);
    }

    public void add(String key, Object object){
        objects.put(key, object);
    }

    public void saveAll() {
        objects.forEach((key, object) -> {
            saveRaw(getLocation(key), object);
        });
    }

    @Deprecated
    public static void saveRaw(String fileName, Object object) {

        try {

            FileOutputStream fileOut = new FileOutputStream(fileName);
            ObjectOutputStream objectOut = new ObjectOutputStream(fileOut);

            objectOut.writeObject(object);

            objectOut.close();
            fileOut.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Deprecated
    public static <T> T loadRaw(String fileName) {

        T object = null;
        try {

            FileInputStream fileIn = new FileInputStream(fileName);
            ObjectInputStream objectIn = new ObjectInputStream(fileIn);

            object = (T) objectIn.readObject();

            objectIn.close();
            fileIn.close();

        } catch (FileNotFoundException ignore) {
        } catch (Exception e) {
            e.printStackTrace();
        }

        return object;

    }

    private String getLocation(String fileName) {
        String location = folderLocation + "/" + fileName + "." + suffix;
        createFolders(location);
        return location;
    }

    private void createFolders(String location) {
        File folder = new File(location).getParentFile();
        if (!folder.isDirectory() || !folder.exists())
            folder.mkdirs();
    }
}