????????????Eclipse??????????IDE??IDE?????????????????hashCode()??????equals()??????

??????????????????

????1??????????????????????????????hashCode()??equals()?????????????????????校???????????id??

????2??eqauls???????????锟�??????????斜?????equals??梅???????????

????3???魏??????a.equals(b)?????a.hashCode()?????b.hashCode()????

????4?????????????写??

?????????ORM?????????????

????1??????????ORM?????些????????????????hashCode()??equals()?????????getter??setter????????????贸?????????????ORM???械??????????????????????些??????械?getter??????????????????????谩?

????2??????????????????校???????????e1.id == e2.id???????????????????????????e1.getId() == e2.getId()??????????????