1. Reviewing for Exam
Lecture 1?

2. Lab 1 Postfix.java Questions? Hexadecimal System.exit(3);
Converting ‘a’ to number
Converting ‘1’ to number
System.exit(3);
Questions?

3. Lecture 1 Test cases for programs Documentation Echo of input
Inline comments
Ending message
Javadocs

4. Lab 2 PseudoWar game Required Test cases Stubs Program Constructors
Specific methods
Generation of number in range 1 to 52

5. Lab 3 Exception Handlers Avoiding Try Catch printStackTrace()
getMessage()
Multiple handlers
Avoiding

6. Lecture 3
Style guidelines
Chapter12 slides

7. Lab 4 Writing code from scratch Illustrating use of exception handlers
Illustrating avoidance of exceptions
Java Tutorial
Java api

8. ArithmeticException
ArrayIndexOutOfBoundsException
FileNotFoundException
PatternSyntaxException
ClassNotFoundException
InputMisMatchException
NullPointerException
NumberFormatException
StringIndexOutOfBoundsException
NegativeArraySizeException
ArrayStoreException
MalformedURLException
IOException
IllegalArgumentException
ClassCastExceptionIllegal
FormatConversionException

9. Lecture 4 Common Exceptions Reading from Files Compile time errors
That can be avoided
That can not be avoided
Reading from Files
Compile time errors
Runtime errors

10. Lab 5 File I/O Use of command line arguments Use of re-direct symbols
PrintWriter (flush)
File
java.io package
Use of command line arguments
Use of re-direct symbols

11. Lecture 5 Play with text examples
Use of StringTokenizer
Use of delimiters
Use of regular expressions
Correct use of Boolean in if and while statements
How comments help

12. Lab 6
Enumerated types
Enhanced for loop (i.e. for… each)

13. Lecture 6
public enum Sessions { SPRING, SUMMER, FALL ; }

14. public enum Planet {
MERCURY (3.303e+23, e6),
VENUS (4.869e+24, e6),
EARTH (5.976e+24, e6),
MARS (6.421e+23, e6),
JUPITER (1.9e+27, e7),
SATURN (5.688e+26, e7),
URANUS (8.686e+25, e7),
NEPTUNE (1.024e+26, e7); …
for (Planet p : Planet.values()) System.out.printf
("Your weight on %s is %f%n", p, p.surfaceWeight(mass));

15. Lab 7 Enumerated types again Order Valid elements Attributes Rank Suit
Card
Deck (?)
Order
Valid elements
Attributes

16. Example for-each for (Rank r : Rank.values()) { System.out.println
r.getBridgePoints() + " " +
r.getAbbreviation() );
} // end for

17. Lecture 7
Chapter 9 –
Chapter_9_Part1.ppt slides
ClearJunk.java

18. Lab 8 Classes toString methods equals methods static fields
when needed
how used
static fields

19. Lecture 8
A few things
Chapter 9 – rest of slides

20. Lab 9 UML diagram Die objects getFaceValue setFaceValue toString Roll
Math.random vs Random

21. Lecture 9 Talk about constructors belongs to class
do not have a visibility modifier
same name as class
may have no parameters (no-arg constructor)
may have one or more parameters (explicit value constructor)
class may have no explicit constructor
class may have more than one constructor
doesn't return values

22. Lab 10 Code re-use Array of objects Explicit value constructors
No-arg constructors
Reading carefully

23. Lecture 10
Professor Harris lecture – see blackboard

24. Lab 11 Designing classes DISCUSSION
Getters and setters are, in general, public methods. Since Fraction is immutable, shouldn’t have them.
Fraction is 4/20 not .20
Numerator and denominator are ints

25. Lecture 11
Somewhat of a repetition of lecture 10

26. Lab 12
Inheritance
Employee
SalariedWorker
HourlyWorker

27. Lecture 12

28. Lab 13 Specialization and Inheritance DISCUSSION
Needed to look at javadocs
Can’t compare one ampm to another using == because they are Strings – need .equals
An AlarmClock is-a Clock (a Clock is NOT an AlarmClock).