convert a hashtable to arraylist

Hi ,
Can I convert a HashTable to an ArrayList

thx
LVL 3
applekannaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Mick BarryJava DeveloperCommented:
depends if you want the valkues or keys.
to get the keys use:

ArrayList list = new ArrayList(ht.values());

to get the keys:

ArrayList list = new ArrayList(ht.keySet());

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
applekannaAuthor Commented:
One question what is the differnce between

using constructor
ArrayList list = new ArrayList(ht.values());

and typecasting
ArrayList list = (ArrayList ) ht.values();

Thx
Mick BarryJava DeveloperCommented:
> using constructor
> ArrayList list = new ArrayList(ht.values());

Creates a new instance of ArrayList

> and typecasting
> ArrayList list = (ArrayList ) ht.values();

Assigns list to the collection returnurned by values().
This will only work if the return instance is an instance of ArrayList (which I'm pretty sure it's not).
Become a Microsoft Certified Solutions Expert

This course teaches how to install and configure Windows Server 2012 R2.  It is the first step on your path to becoming a Microsoft Certified Solutions Expert (MCSE).

applekannaAuthor Commented:
So is typecasting is only used when return type is of object and of other primitive types like char to int is it?

Mick BarryJava DeveloperCommented:
eg. if you have an ArrayList containing Strings':

String s = (String) mylist.get(0);
applekannaAuthor Commented:
thx for ur help :)
Mick BarryJava DeveloperCommented:
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Java

From novice to tech pro — start learning today.