COE318 u2013 Fall 2010 Final (Solutions) - Ryerson...

1
Ryerson University
Department of Electrical & Computer Engineering
COE318
Final Examination Dec. 14, 2010
Name:________________________ Section:______________
ID #: _________________________
Time: 3 hours
Circle the name of your Professor: K. Clowes, O. Das, T. Yang.
Instructions
This exam is 3 hours long. It contains 9 questions. Please check your copy to make sure that it
contains 13 pages (including this page) before you start.
(1) This is a closed-book exam.
(2) If in doubt on any question, then you must clearly state your own assumption(s).
(3) For each question, you must show your steps and reasoning clearly to be awarded part marks
for your answer.
For marking use only (do not fill)
Questions Score Max
1 6
2 10
3 14
4 10
5 10
6 15
7 10
8 15
9 10
Total 100

2
Q1. Consider the following Java code: (6 marks)
try {
System.out.println(11);
try {
System.out.println(12);
f();
System.out.println(13);
}
catch (E1 e1) {
System.out.println(14);
}
finally {
System.out.println(15);
}
}
catch (E2 e2) {
System.out.println(16);
}
Note that f() does not generate any output. Indicate the output of this code for the cases where (a) there
is no exception, (b) f throws exception
(a)
(b)
Q2. True/False (10 marks)
For each of the following questions about Java, circle T (true) or F (false)
T / F You can write a constructor for an abstract class.
E1
T / F You can create an instance of an abstract class.
You can declare a constructor in an interface.
T / F Classes, methods, and instance variables can all be declared final.
T / F A class can extend only one other class.
T / F A class can implement at most one interface.