Iterate 2 maps and adding value to each

[metal_pat]

Hello, I have 2 maps, One have Park object as key and an empty TreeList of Ride object as value ( parkMap ). The second one have Ride object as key and an empty Treelist of Park as value (rideMap).

Now for a given Park name and Ride name, I must iterate trough each map ( parkMap for Park and rideMap for Ride ) and if they both exist in their respective map, I must add the Ride to the empty TreeSet of the Park key and the Park to the empty TreeSet of the Ride key.

I am stuck! Any suggestions??

Thank you!

[Eranga]

Do you know how to traverse through a map?

[metal_pat]

Yesi I do, sorry, I should have posted what I have coded so far :

for (Iterator<Park> i = parkMap.keySet().iterator();i.hasNext();)
if ( i.next().getName.compareTo(parkName)= 1)

This will tell me if the Park is present in my map. I then do the same in the Ride map to find if the ride is present.

Now what I don't know is how to put the object I have found in the value ( in my case a TreeSet ).? Can you "put" something in the value at a specific place ( which would be i.next() I guess?? ) ??

Thank you!

[Eranga]

Why don't you keep the records in a separate ArrayList?