Using class in main class

Question

I have created two class one for create dB in the name of backend
another one is main class
if I access backend class in main class
create table event occur every time when I run main method
what my doubt is every time when I run main class new table create?

Answer 1

I am late to answer but I am having the same doubt and I am trying to solve it. Will let you know if I find a solution.