Question

I am bit confused with some implementation,Here is the my problem,

1. Two users can login to the system.(User A,B)
2. They login same time with different user names and passwords

We assume, Employee class has a static variable call age

User A change the age value to 45, after that user B change the age value to 28, then both save the changes.

so what would be the real values of A and B?

Thank you

Answer 1

Well, first of all, “age” should be an instance variable, not static – a static variable is shared by all the instances of a class.

In the example you gave, the last set value is the one “which sticks”, assuming you are working in a non clustered environment (ie, shatic variables are shared in classes instantiated in the same virtual machine).