Every example I have seen regarding object serialization, includes an all field constructor and a getter and setter method for every field. Is this nessecary? What do you have to do to make a java object serializable, other tagging it with the serializable interface and assuring all non-transient field are them selves serializable.
There is nothing required to make an Object serializable, apart from the basic steps you've mentioned. There are no requirements for the existence of getters/setters or constructors of a certain form (though there may be other legitimate reasons to want those).