asked on

How to use a nested TreeMap

Hi,

I have data in the following form: Library Case Study example

String borrower, Object loanstate, Object loanitem.

I have many borrowers, loanstate is either borrowed or returned and the loanitem
would be say a bookitem.

What I would like to do is output in the form:

Borrower: Borrowed Book1
Book2
Book3
..etc
Returned Book1
Book3

I thought maybe a nested TreeMap would allow me to do this i.e.

Key, (key, value)

borrower (loanstate, loanitem) would allow me to do this.

Any suggestions on how to code this up ?

Thanks

Drew

ASKER CERTIFIED SOLUTION

CEHJ

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

DrewAllan

ASKER

Can you give me an example of how to code it ?

Thanks

CEHJ

Sorry - no. This is clearly class work and as such, it's against the Member Agreement to do this. We can certainly help with code you have already produced.

DrewAllan

ASKER

Ok I can appreciate that but it was more an example of how to constuct it I was after.

How me suggesting an example of how to construct the Nested TreeMap

would it be

Map(index,[indexOuter,[[indexInner1, [value1, value2,... ],[indexInner22, [value22, value23,... ], [indexInner3, [value31, value32,... ],[indexInner4, [value42, value43,... ]..etc])

where index would be string object called Borrower and the outer nest value [index,[values]] would be say an ArrayList and then the inner nest values would be another ArrayList.

Do you think this would work or would there be a better way of doing it?