11.  Which containers use a FlowLayout as their default layout?

12.  What state does a thread enter when it terminates its processing?

13.  What is the Collections API?

14.  Which characters may be used as the second character of an identifier, but not as the first character of an identifier?

15.  What is the List interface?

16.  How does Java handle integer overflows and underflows?

17.  What is the Vector class?

18.  What modifiers may be used with an inner class that is a member of an outer class?

19.  What is an Iterator interface?

20.  What is the difference between the >> and >>> operators?