hibernate does most (if not all) of that for you.
what i mean is that say for example,
i have an entity bean which contains two fields name and age,
first time it will render on the front page for user to edit,
so i would like to "save" it only when users actually have change the value. Otherwise just abort it. So how do i track this ? thanks...
you have to code it in the setters of your entity beans and mark the relevant property, which has changed, as a need for an update. additionally you can use a PropertyChangeListener.