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In C#, it’s common to have methods like this:
public IPerson GetPerson()
{
// do stuff
return new Person(..);
}
where “IPerson” is an interface used by Person, SpecialPerson, etc. In other words, although the method above returns a Person, a strategy pattern could be implemented such that a SpecialPerson is returned in lieu of a Person, provided they all use the IPerson interface.
Is this sort of thing possible in Java?
Yes. Java has interfaces too.