hashCode() method when equals() is based on multiple independent fields

Question

i have a class whose equality is based on 2 fields such that if either one is equal then the objects of this type are considered equal. how can i write a hashCode() function for

Answer 1

After re-read the question.

You may auto-complete the another field when one of them being updated.

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EDIT: My code may say better then my English.

void setName(String value){
  this.id=Lookup.IDbyName(value);
}
void setID(String value){
  this.name=Lookup.NamebyId(value);
}

EDIT 2:

The code on the question may wrong as will always return true unless you've set both the id & name.

If you really want a method that do partial equals, create you own API that named "partialEquals()".