CS110 Wrapup
Tuesday, May 11, 2004
• Announcements
– final exam Thursday, May 20, 8:00 AM
McCormack, Floor 01, Room 0608
(easier than last exam?!)
– wise1 due next tonight
– wise due Thursday
• Wrapup
– Course goals
– How we met them
– Final exam
– Where you can go next
• at UMass
• in the profession
wrapup
1
WISE
• wise1 due tonight must compile and run
• minimal functionality acceptable
if (whatever)
(
if (somethingElse)
{
// many lines of code that
run
// off the edge of the pap
er
}
}
wrapup
2
Learning to program
•
•
•
•
Lots of fun
Practical
Hard, time consuming
Unusual mixture:
slide from
lecture 1
– sophisticated intellectual content
– picky details that must be right
• Exercise in reading, writing, thinking
• CS110 is for CS majors, future professionals
wrapup
3
Teaching/learning style
• To learn a language well, live in a land where
it’s spoken – anxiety producing, but efficient!
• Learn to write by to reading and writing and
writing about what you learn
• 60% of a lot is more than 100% of a little
• Ask questions (to slow me down)
slide from lecture 1
wrapup
4
CS110 goals
• Learn to think like a programmer by reading
and writing programs
• Learn Java
• Prepare for life as a CS major
• Work hard / work productively
• Have fun
• Amaze yourself by how much you’ve learned
wrapup
5
Teaching philosophy
• Programming is much more than the details
– think about the important ideas
– but the details matter: learn syntax too
• Read more code than you write,
write about the code you read and write
• Work on significant applications:
Bank, shapes, Juno, WISE
• Learn from lots of sources
– class, books, net, API, friends
• Pay as little attention to grades as possible
wrapup
6
OOP
• Think of the (software) world as a bunch of
objects communicating with one another
• Choose a language that supports that view
• Java
–
–
–
–
–
object oriented
portable
fashionable
well designed
right for CS110 and for practical programming
wrapup
7
Development Environment: xemacs
• Arguments for
–
–
–
–
basis for future work in major and career
easy to set up on a PC
java and javac are visible commands
command line interface (no GUI)
• Arguments against
(for a modern graphical environment instead)
– command line interface (no GUI, unintuitive)
– old fashioned
– no sparkle
wrapup
8
Official Java
• Keywords
– http://java.sun.com/docs/books/tutorial/java/nut
sandbolts/_keywords.html
abstract, boolean, break, byte, case, catch,
char, class, const, continue, default, do,
double, else, extends, final, finally,
float, for, goto, if, implements, import,
instanceof, int, interface, long, native,
new, package, private, protected, public,
return, short, strictfp, static, super,
switch, synchronized, this, throw, throws,
transient, try, void, volatile, while
• Other syntactic elements
= + - * / \ “” ‘’ ( ) { } [ ] || && . , ; < >
>= <= == % // /* */ /** ? : ! != ; += ++
wrapup
9
Vocabulary
• Java API classes
String, TreeMap, Iterator, ArrayList, Integer, Object,
Character, File, System, *Reader, *Writer,
Math, StringTokenizer, StringBuffer, Date, Exception,
...
• From our applications
Bank, *Account, Shape, Screen, Box, *Line,
LinearEquation, Juno, Shell, ShellCommand, JFile,
Directory, TextFile, User, *Exception, Terminal,
WISE*, …
wrapup
10
Vocabulary
• For talking about programs
comment, api, message, method, object, class,
convention, polymorphism, token, identifier, parse,
javadoc, cast, unit test, implementation, inheritance,
JVM, getter, overrides, documentation, declaration,
scope, parameter, argument, signature, field, variable,
error, instance, block, call stack, syntax, semantics,
delegate, design, model, compile time, run time, ...
• Study from JOI glossary
wrapup
11
Final Exam
• Structure like the hour exams
• Mix of easy and hard questions
• Exam is three hours long but I will try to write
one that takes just two
• Chapters 1-9 of JOI, examples
• Based on Bank 9, Juno 7
• Closed book/notes
wrapup
12
Final Exam
• Some questions will refer to WISE system
solution (to be posted) – bring code to class
• Some perfectly predictable questions
– what are the tokens, classes, objects, messages, …?
– in which class will you find …?
– what does this program/line/method do …?
• Improve WISE by adding …
wrapup
13
Final Exam
• Write HelloWorld.java or some similarly simple
program, from scratch
• Boxes and arrows
• Call stack
• Questions with the answer “It depends … ”
• Questions that require you to write sensibly
about programs and programming
wrapup
14
What next?
• CS210: Data Structures and Algorithms
–
–
–
–
–
–
–
interfaces (more abstract than abstract classes)
lists, trees, stacks, queues
dynamic data, references, equality, cloning
searching, sorting, parsing, evaluating expressions
efficiency considerations
GUI programming
more Java
• CS240: Programming in C
– procedural programming (not OOP)
– memory layout: bits and bytes, pointers,
the stack and the heap, debugging
– introduction to Unix, particularly tools
wrapup
15
What next?
• CS major
– CS210 & CS240, calculus & linear algebra, CS310,
CS320, upper level work ...
• Real world
– Software development
– QA (Quality Assurance = software testing)
– IT (Information Technology
= business computing infrastructure)
– System administration
– Technical writing
– Web development/maintenance
– Customer support
– Your own internet startup
company
wrapup
16
Heaven and Earth
• There are more things in heaven and earth
than are dreamt of in your philosophy.
(Shakespeare’s Hamlet)
• There are more things dreamt of in your
philosophy than are in heaven and earth.
(Programmers can invent worlds that never
were, nor ever could be.)
wrapup
17
Thank you
• I enjoyed this semester
• I learned a lot
• I hope you can say the same
• Good luck on the exam
wrapup
18