Self-Assessment Exercises
Chapter 15:
Exceptions
1.
What happens when a Java program executes the following statement?
x = 100 / 0;
a.
An
ArithmeticException
is thrown.
b.
The program terminates with a somewhat helpful message.
c.
x is assigned 0.
d.
x is assigned infinity.
2.
All exceptions ultimately derive from the ________ class.
a.
Error
b.
Exception
c.
Throwable
d.
UserException
3.
Which of the following
catch
statements would catch a
DivideByZeroException
?
a.
catch (ArithmeticException e) { … }
b.
catch (DivideByZeroException e) { … }
c.
catch (Exception e) { … }
d.
All of the above
4.
Once an exception is caught, it ________.
a.
may be rethrown with a
rethrow
statement
b.
may be rethrown with a
throw
statement
c.
may be rethrown with a
throws
statement
d.
must be handled and cannot be rethrown
5.
The
finally
keyword is used to identify a block of code that ________.
a.
is constant
b.
must be run just before the program exits
c.
must be run just before the program throws an exception
d.
must be run before the method exits
