Phpmyadmin – java transaction.rollback() not rollbacking the DB

I try to do transactions on my project java, and I realise all transactions don’t rollback the rows in DB.
It’s a local project (the DB was MySQL on phpmyadmin, all tables in innoDB).

I try to do an insert (with a transaction), execute an exeption, and rollback the insert DB.

here an exemple of block transaction I use.

EntityManager em = EMF.getEM();
BasketService basketService = new basketService();
EntityTransaction transaction = em.getTransaction();

try{
  transaction.begin();
  Basket basket = new Basket();
  //set basket params.
  basketService.insert(em, basket);
  if(basket.getId() != 0) //if inserted.
    throw new Exception("fake error");
  transaction.commit();
}catch(Exception e){
  transaction.rollback();
  //print error.
}finally{
  if(transaction.isActive()) //security.
    transaction.rollback();
  em.close();
}

here an exemple of service I use.

public class BasketService {
  public Basket insert(EntityManager em, Basket basket){
    em.persist(basket);
    em.flush();
    return basket;
  }
}