[Mjolnir]

Hello everybody! I'm new to codenewbie and I need a little Java help. I'm looking over my final exam review sheet and my professor has let it be known that :
A) all of the questions on the final exam review sheet will be
on the final
B) he loves fill in the blank questions
C) the answers are not in the book

After researching the Sun website, I'm stuck on three questions:

EXCEPTIONS
What class type can be used as a catch block argument to catch any checked exception?

INPUT AND OUTPUT
What class helps you avoid the platform dependent aspects of files such as file names with either forward slashes or back slashes?

How many objects are required to write an object to a file using serialization?


Any help would be appreciated. Thanks!