Can not persist an object with Id equals new BigDecimal(0)

Question

The problem is that the cat object is not persisted if I set the id to 0 :

cat.setId(new BigDecimal(0));
session.save(cat);

It works with all the other numbers but not 0. Why ?

Answer 1

Well, sorry, in fact it works when I begin my loop from i = 1.

In fact, the real problem is that the cat object is not persisted if I set the id to 0 :

cat.setId(new BigDecimal(0));
session.save(cat);

If anyone knows why ? I should ask this in a new question.