public static void main(String[] args) {
    File currentDir = new File("C:\Users\luccaskammer\Desktop\Imagens\"); // Define o diretorio a ser lido
    displayDirectoryContents(currentDir);

}

public static void displayDirectoryContents(File dir) {
    try {

        ImagensParaDBController contr = new ImagensParaDBController();
        File[] files = dir.listFiles();
        DeletePng del = new DeletePng();
        //ConvertData conv = new ConvertData();

        for (File file : files) {

            ImagensParaBD img = new ImagensParaBD();
            ImagensParaBD name = new ImagensParaBD();
            ImagensParaBD picture = new ImagensParaBD();

            if (file.isDirectory())

            {

                System.out.println("directory:" + file.getCanonicalPath());
                displayDirectoryContents(file);

            }

            else if(file.isFile()) {

                System.out.println("     file:" + file.getCanonicalPath());
                img.setName(del.deletePng(file.getName()));
                java.nio.file.Path filelocation = Paths.get(file.getCanonicalPath());
                img.setPicture(Files.readAllBytes(filelocation));
                contr.insertImageDB(img, picture, name);
            }

            else
            {

                System.out.println("invalid");

            }
        }

        contr.disconnect();

    }
    catch (IOException e) {
    }
}

}

@Entity
@Table(name = "planegeo")

public class ImagensParaBD implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    //private String pathFolder;
    private String name;
    @Lob
    private byte[] picture;

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public byte[] getPicture() {
    return picture;
}

public void setPicture(byte[] picture) {
    this.picture = picture;
}



}

public class ImagensParaDBController {

EntityManagerFactory mf = Persistence.createEntityManagerFactory("mySQLPU");
EntityManager em = mf.createEntityManager();

public void insertImageDB(ImagensParaBD img, ImagensParaBD name, ImagensParaBD picture) {

    em.getTransaction().begin();
    em.merge(img);
    em.getTransaction().commit();

}

public void disconnect() {

    em.close();
}


public void insertImageDB(ImagensParaBD img) {
    throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

}

List<ImagensParaBD> all = em.createQuery("Select a From ImagensParaBD a where name=:name",
ImagensParaBD.class)
.setParameter("name", theNameTOFind)
.getResultList();