Family Tree in Java

Hi guys!

I have to implement a family tree in Java. I have an input file with family relations that sounds like this :

John child Ben (-> John is the child of Ben ; Ben is the parent of John)

Ben (-> if the line contains only one string that means the person is the Root )

Tim brother Mary (-> Tim is the brother of Mary; Mary has Tim as a brother)

Sarah cousin Marshall (-> Sarah is the cousin of Marshall ; Marshall is a cousin of Sarah )

Marshall brother Sophie (-> Marshall is a brother of Sophie ; Sophie is a "sister " of Marshall )

Mary parent Sarah (->Mary is the parent of Sarah; Sarah is a child of Mary)

Sophie child Tim (->Sophie is a child of Tim;Tim is Sarah's parent)

John brother Mary (->John is a brother of Mary;Mary is a "sister" of John)


Note that I have an abstract class called Person with details of name, array of children,array of uncles,array of cousins and so on.
The fact is that there is only one ROOT; anybody has only one parent; the SEX doesn't matter.
I have to implement the following classes : Brother;Cousin;Uncle;Nephew;Parent;Child that extend the abstract class Person

A child is also a PERSON;
A parent can be someone's CHILD;
A brother is also a CHILD;
An uncle is someone's BROTHER;
A nephew is also a CHILD;
A cousing is also a NEPHEW;

Please give me some ideas.I would appreciate very much!

What's your question? Where are you stuck? What have you tried?

This is a slightly strange example to teach Java with. This kind of stuff is what prolog is designed for.

--- Update ---

Also, please don't post multiple copies of the same question. I've deleted your duplicate post.

I am trying to save the input information in a <Person> ArrayList and I don't know if this is a right solution.

It might be fine. Another option might be to create your own tree structure, which seems like the point of this assignment. What happened when you tried?