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There seems to be lot of problems..
in second code can never be null.
What is BufferedFile(do you mean to have some array for holding up the data) and what is the data format in the text file you...

Just want to know why you want to connect to Database,
are you storing your points (i.e. co-ordinates) in data base.

hi,
Just putting in some effort to sort things out...Assuming in both part 1 and part 2 we are using synchronized blocks.
In first case Table object is acting as a lock.
In Second case Customer...

what is your question?
You want to learn JDBC?? there are lot of tutorials available out there...

hi,
i guess you need to have arraylist of asteroid object and asteroid should have some sort of mechanism (may be pseudo random generator for co-ordinates) so that asteroids have same behaviour but...

in which language you are planning to make ur project..

You can create a library management system..if you require any help then let me know..

Are you writing this code in some IDE like Netbeans /Eclipse ?and at what point you are getting the error i mean is it runtime or compile time,