I have an emergency assignment that is due at 4:30, it is a test and it covers Topics covers: +Classes, interface, abstract, inheritance and overriding methods + Wrapper classes and String +...

Topics covers:

+Classes, interface, abstract, inheritance and overriding methods
+ Wrapper classes and String
+ Exceptions
+ File IO - binary file & random access file
+ Recursion

It is due in a few hours please help.