Which of the following classes best represents rare and serious internal system errors?

Question

Error
Throwable
RuntimeException
Exception

I think it may be Error or Throwable.

Been having alot of trouble with this class lately, help would be appreciated.

~Thank you.

Answer 1

1.C, 100, Error
2.C, throw new...
3.D, FileNotFoundException
4.C, NullPointerException
5.A, Error (Your Question)
6.C, The exception class and its subclasses are checked, except for the RuntimeException and its subclasses
7.D, NullPointerException will be thrown by method m2() and will crash the program
8.C, Method x1() must either catch IOException or declare that too...
9.D, the finally block will run whether or not there is an exception...
10.C, Handle any exceptions that occur...