How to store this lists and still be able to compare them?Java advice?

[Miday8]

Could you plese give me some adivce on this problem:

I have two lists of titles of the type:

title1____title1
title1a___title2
title1c___title3
title1b___title4
title2____title3
title4
title5
and the first list must have attached to it a list of file names. How can I store this two lists so that I can compare them?

At the momet I have stored my two lists as ArrayList and I am comparing them with remveAll applied on the first list.

How can I store the first list so that it has the requested connection with the filename for every title and still be able to compare it with the second list?

[Sierra]

There are many possibilities depending on your exact requirement.
- One would be to use a Hashtable<..., ...> instead of a normal ArrayList to map single elements to a filename.
- Another solution would be to use the HAshtable to refer to a newly created item that contains the additional information (you need to define a new class e.g. InfoTitle)
- The most flexible one would be to create own list items which implement the Comparable<...> interface and (as it is an own class you define) may contain any title, filename or other information for a given title. You then need to implement the compareTo(...) method and this method will determine how one item compares to the other.

Those are my two cents I guess. ;)

[JosAH]

Would a Map<String, Set<String>> do the job?

kind regards,

Jos

[DarrylBurke]

Cross posted
string - How to store this lists and compare them Java advice? - Stack Overflow

db

[Miday8]

Would a Map<String, Set<String>> do the job?

kind regards,

Jos

Hello,

For anyone who may encounter the same problem, this solution worked for me:

Map<String, String> titles = new HashMap<String, String>();

And the compare:

List<String> titlesToRemove = Arrays.toList("title1", "title2", "title3");
titles.keySet().removeAll(titlesToRemove);

Thanks to:Nikita Beloglazov
string - How to store this lists and compare them Java advice? - Stack Overflow