I have to write a bank account(ATM) java program and a text file(dat
file) that store all the account details. Every time a user enter
the account by enter account number and password, if the input
correct by checking the text file using Stringtokenizer they get to
choose to deposit, withdraw or check account balance , etc... After
they deposit or withdraw money from the account, the text file needs
to update the account detail by using Vector. My problem is i don't
know how to do that..