What is the use of Vector where as Arraylist can be Synchronized?

[muthukrishnan.muthu]

Hi All,
it may silly question but any how need to know more details.

The difference between Vector and ArrayList is thread safe whereas Arraylist is not. but as the arraylist can be make synchronized what is the necessity of Vector?

also
Enumeration and Iterator?

thanks in advance.

[Tolls]

Vector is a legacy class from pre-1.2 (along with Hashtable).
1.2 saw the introduction of the Collections framework.

Same for Enumeration.

[muthukrishnan.muthu]

Fine, one more question releated to this, how to check whether the current ArrayList object is synchronized or not?

[Tolls]

That's easy.
An ArrayList is not synchronised.
You can get a List that is synchronised based on an ArrayList using Collections.synchronizedList(), but the ArrayList itself won't be synchronised.