[jboss-dev-forums] [EJB3 Development] - Re: Entity hashCode and equals overriding

fabio valsecchi [https://community.jboss.org/people/fabiovalse] created the discussion "Re: Entity hashCode and equals overriding" To view the discussion, visit: https://community.jboss.org/message/787964#787964 -------------------------------------------------------------- I've just fix the problem! I've changed the code in this way: ------------------------------------------------------- @Override public boolean equals(Object o) { if (o==this) return true; if (o instanceof Book) { if (this.isbn.compareTo(((Book) o).getIsbn()) == 0)                                  return true;                        else return false;              }              return false;           } ------------------------------------------------------- The problem was the comparison between string! Now I use the compareTo() method and everything correctly works. Thank you for your time Piotr! -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/787964#787964] Start a new discussion in EJB3 Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]