Question

I am following this tutorial, which is the easiest Java EE web app using JPA I found on the net after weeks of searching, and I’d like to add a remove method to the DAO but I don’t know exactly how to do it.

Here the code I’ve added to the DAO class:

Player player = em.find(Player.class);
em.remove(player);

Is it possible to add CRUD functionality? I want keep the code as simple as possible.

Answer 1

It is certainly possible and you already have one half of that code, so it shouldn’t be so difficult to create a method which does that:-) Just put this in your bean

public void removePlayer(Long playerId) {
    Player p = em.find(Player.class, id);
    em.remove(p);
}

Try to read something about JPA, it’s no so hard to learn(unless you go really deep) and you are asking here something what you could have googled in two minutes:-)