How to get quantity of items from an Arraylist?

Question

I’m trying to count how many items there are in one ArrayList, I already have something ready:

private int quantidadeN = listaNotificacaos.size();

It should store the quantity within the variable quantidadeN, but when I play on the page it brings a result 0.

On the page I’m calling with this code:

#{notificacaoControle.quantidadeN}

Can someone help me?

Answer 1

The problem is that when the variable quantidadeN was defined, the size() was equal to 0.

Use the collection proopy in your EL:

#{notificacaoControle.listaNotificacoes.size()}