unique customer id

Newbie Member
22Oct2010,17:28   #1
spongeBob's Avatar
I want to generate a unique id for customers in java, the customer id will take 2 alphabets from country Name (i.e. Australia- AU and America- AM), then pick 2 last digits of year (i.e. 2010- 10) finally I want a counter that can provide me number in a series like 0001, 0002,0003… Now the problem is I am not finding a way to save the last number that was assigned to a customer before closing the application, because every time I restart the application it moves back to -0000.
Pro contributor
26Oct2010,11:54   #2
virxen's Avatar
use a file and store the last value used
when you start your app read this value
Newbie Member
28Oct2010,13:15   #3
spongeBob's Avatar
Thanks it worked for me