Usage of ArrayList and Vector

[ravikiran_kakar]

Hi,
As we know Arraylist is non-synchronised and vector is synchronised.So we normally use Arraylist for multi-user accessing many times.For the same purpose i may not use Vector.For example, i have a session bean in EJB, From this i am calling an entity bean with some results, where in i am sending those reults through one Vector. My question is, is it mean that the retuned results are not accessible my more than a user?In that situations i have to use a ArrayList for multi-user accessing.
How for it is correct.If the Vector is not suitable for that situation, in which scenarios i can use Vector.
Please clarify this.

thanks in advance,

ravikiran.

[sunnylearns]

synchronization is used for maintaining DATA-INTEGRITY in multi-user environment.

When you dont have multiple users UPDATING / MODIFYING the same collection. you can very well go for a non-synchronized implementation. because here, multiple users ONLY read from the collection