Indiana University Computer Science Department

C212 (and A592)
Introduction to Software Systems
Fall 2000

Writing Java is like realizing your imagination.
Donghui Yuan, Quest for Java contest 2nd place winner

(Also see ac.csci.c212)

Thur, Dec 7

• Regularly scheduled office hours will not be held during finals week. There will be four help sessions run by the AI's to answer any last minute questions you may have before the exam. Feel free to attend all or any part of these sessions.

  Day	Time	Room	AI
  Sun, Dec 10	2 - 3 p.m.	Swain East 140	Wei
  	3 - 4 p.m.		Manoj
  Mon, Dec 11	7:15 - 8:15 p.m.	Ballantine 228	Nick
  	8:15 - 9:15 p.m.		Ben

• Programs from Menzel's lecture today: GradeClient and GradeServer.

Wed, Dec 6

• Here's the Quiz 6 solutions.

Tue, Dec 5

• Programs from Menzel's lecture today: DeadlockDemo and TimeClient.

Thur, Nov 30

• Here's the CounterDemo program from Menzel's lecture today.

• Check the syllabus page for date and time of the final exam.

Wed, Nov 29

• Assignment 11 is posted on the syllabus page.

• Here's the Warmup thread program from Menzel's lecture yesterday.

Tue, Nov 28

• Quiz 6 is on Thursday and will cover the following topics:
  • Inheritance (extends, super)
  • Iterator
  • Vector/Enumeration
  • Exceptions (checked and unchecked)
  • throw/throws
  • try/catch/finally
  • Streams (BufferedReader, BufferedWriter)
  • Command line arguments
  • Simple Unix (I/O redirection, pipes)
  • Stacks and Queues

Tue, Nov 21

• Here's some Quiz 5 solutions:
  • version H
  • version M

Thur, Nov 16

• Here's the ListDemo4 program from Menzel's lecture today.

• Here's some solutions to assignment 9: ListDemo and Polynomial.

• Menzel's office hour next Tuesday is cancelled.

Wed, Nov 15

• Here are the programs from Menzel's lecture yesterday: BankAccountDemo, IODemo and Copy.

Thur, Nov 9

• Here's the ListDemo3 program from Menzel's lecture today.

Tue, Nov 7

• Here's the BankAccountDemo program from Menzel's lecture on Thur, 11/02 and the Toy, CoinDemo, and ListDemo2 programs from today's lecture.

Thur, Nov 2

• Assignment 9 is available. You have two weeks to complete the assignment. You'll need it. Start early.

• Here are solutions to Assignment 8:

  IntList
  IntStack
  PostfixExpression

Tue, Oct 31

• Here's the new version of ArrayDemo from lecture today. For those students in Haynes' lecture, please note the changes made to the Strategy classes. I forgot to make the final refinement of changing the return type of apply to Comparable. Please see me in office hours or send me email if you have any questions.

Mon, Oct 30

• Here's the Quiz 4 solutions.

Fri, Oct 27

• Here's the solutions to In-lab 8.

Thur, Oct 26

• Here's the new version of ArrayDemo from Menzel's lecture today.

• Lab sections 1415/1373 and 1418/1373 will perform this in-lab exercise this week.

Wed, Oct 25

• Quiz 4 is tomorrow. The following topics will be covered: event-driven programming (listeners), interfaces, arrays, searching (linear and binary), sorting (insertion, selection, quicksort), and the IntList class.

  Remember that the quizzes are open-book. It's advisable to bring printouts of the class notes and of the programs you've been writing for the assignments with you.

Tues, Oct 24

• Here are the programs from Menzel's lecture today:
  • TokenDemo is an example of how to use the StringTokenizer class.
  • List1 generalizes the IntList class to a List class, where each item in the list is an Object, not just an int.
  • List2 solves the problem of the empty list not being an object itself by defining two classes, Empty and Node, both of which implement the List interface.

Thu, Oct 19

• Here's the IntList program from Menzel's lecture today.

Wed, Oct 18

• Assignment 8 is available.

• Here's the ArrayDemo program from Menzel's lecture last Tuesday.

Fri, Oct 13

• The solutions to Quiz 3 are linked from the syllabus page. Quiz 4 will be on Thur, Oct 26, Quiz 5 on Thur, Nov 9, and Quiz 6 on Thur, Nov 30.

• The due date for Assignment 7 has been extended until midnight on Fri, Oct 20. Assignment 8 will be published on Wed, Oct 18 and it will be due at midnight on Wed, Nov 1.

Thur, Oct 12

• Assignment	Part	Solutions
  6	Homework	Blocks1, Blocks2, Blocks3
  	In-lab	ColorBoxes
  5	Homework	PostCardDemo, VendingDemo, TriangleDemo
  	In-lab	StudentDemo

• Assignment 7 is available.

Tue, Oct 10

• Here's the two programs from Menzel's lecture today: InterfaceDemo and ArrayDemo.

Thur, Oct 5

• Here are the applets (spruced up a bit) that were covered in Menzel's lectures this week:

  Applet	Source	Purpose
  MouseDemo	MouseDemo.java	produces a trace of mouse callbacks on System.out.
  Dots	Dots.java	draws a dot centered at each mouse click
  Scribble	Scribble.java	draws dots on a drag; right click increases brush size; shift+left click decreases brush size
  RubberLines	RubberLines.java	press left and drag to rubberband a line; if shift is depressed, then a rectangle is rubberbanded instead

• Assignment 6 is available.

Thur, Sept 28

• Here's the latest and final version of BankAccount, which was developed in Menzel's lecture today.

Wed, Sept 27

• Assignment 5 is available.

Tue, Sept 26

• Here's the BankAccount example from Menzel's lecture today.

Mon, Sept 25

• Please use Netscape, not Microsoft Explorer, when uploading files to the submission system.

Sun, Sept 24

• Reminder: Quiz 2 will be given in lecture on Thur, Sep 28. It is open book and open notes. However, no computing devices of any kind may be used and you may not share materials with another student during the quiz. One or more of the quiz questions will be taken directly from Exercises 3.1 - 3.11 on pages 166 - 169 in the text!

  If you do not know what time your lab session starts, then please learn so before Thursday.

Thur, Sep 21

• Here's the applet demo from Menzel's lecture today:

  Applet	Source
  Demo	Demo.java

• Grades for Assignment 1 and Quiz 1 are now available at Post'em.

  Generally, our habit will be to update the Post'em gradebook every week and we won't ordinarily post a message here when we do so. You should just check your grades periodically during the semester. A link to the Post'em site can be found in the above table of frequently used links. If you think there is an error in the gradebook then contact your AI if it is for an assignment grade or your instructor if it is for a quiz.

  About Z's in the gradebook: A grade of Z on an assignment means that either you did not submit any work for the assignment (in which case, the Z is eventually interpreted as a zero) or it could mean that your AI has not yet entered an assignment grade for you in the gradebook. Please note that a grade of F is viewed as better than a grade of Z, because the F indicates that, although you didn't do passing work, you at least made an attempt.

• Assignment	Part	Solutions
  3	Homework	Minimizer, Scorer, Mangler

Tue, Sept 19

• Here's the revised version of Palindrome and also the Demo from Menzel's lecture today.

Mon, Sep 18

• Here are some sample solutions to the programs that you've written so far this semester:

  Assignment	Part	Solutions
  3	In-lab	Averager
  2	Homework	ToiletPaper, Initials, Tasty
  	In-lab	Grade, Median
  1	Homework	Cube, Compute, Tax, Paint
  	In-lab	Hal

Thu, Sept 14

• The solutions to Quiz 1 are linked from the syllabus page.
• Here's the Palindrome program from Menzel's lecture today.

Wed, Sept 13

• Assignment 3 is available.
• The slip time policy described in assignment 1 has been cancelled. (The Vincent system's handling of it turns out to be unsatisfactory.) So get your assignments in on time, or they do not count. Remember, you can submit as often as you like, so be sure to submit something well before the assignment is due to assure at least partial credit.
• The Vincent system also turns out to be unsatisfactory for posting grades in this course. You will soon be able to see your grades via the Post'em link in the new frequently used links table above.
• For those still having problems configuring Netscape to read the newsgroup and send replies, see note 3 on the course System Notes web page.

Tue, Sept 12

• Reminder: Quiz 1 will be given in lecture on Thur, Sep 14.
• Here are the example programs from Menzel's lecture today:

  Program	Topic
  Pizza	nested ifs, logical operators
  Freezing	counting
  Seventies	boolean methods, while loop

Wed, Sept 6

• From now on the submission system will automatically compile your program files and dump any error messages to the screen. If you don't see any error messages, then your program compiled successfully. If you see one or more error messages, then you should correct the errors and resubmit.
• Assignment 2 is available.

Tues, Sept 5

• If you have gone through the Emacs/JDE/JDK Installation Tutorial and are having trouble getting the JDE menu to appear in Emacs, it may be because you are not launching Emacs through the shortcut. Make sure you click on the shortcut labeled Emacs in c:\java. Do not use emacs.exe in c:\java\bin because that won't load the JDE library. Note that you won't see JDE on the Emacs menu bar right away. You must be editing a .java file in order for that menu to appear. Select "Save buffer as" from the Files menu and then type in a filename ending with .java and the JDE menu will appear.
• The Lewis and Loftus texts are at TIS!

Mon, Sep 4

• Menzel's office hours have changed.
• The submission system is once again operational!

Sun, Sep 3

• Several students have reported getting a "zero byte filesize" error from the submission system. We're working on it. I'll post a note here once the system is fixed.

Fri, Sep 1

• The gliches in the submission system have been corrected. If you try to view your files now, then you should be able to see a listing of every file that you've submitted. I'll be uploading fresh rosters into the system shortly. If you are registered for the course and are still being denied access into the system by tomorrow, then please send e-mail to menzel. Include your full name, student number, and the lab section in which you are enrolled.

Thur, Aug 31

• There was an error in a file from JDE and Important Emacs File that has since been corrected. If you downloaded this file before 3 p.m. today, then please get a fresh copy. Otherwise, don't worry about it.
• To recreate the Emacs/JDK/JDE environment that you'll be using in the STC labs on your NT machine, follow the steps in this Installation Tutorial.

Wed, Aug 30

• The Gilbert and McCarty (Waite Press) textbooks that were mistakenly ordered should be returned if possible (hopefully you have not marked your copy). It was reported in class that they must be returned by September 8th.
• The Java Software Solutions text by Lewis and Loftus is on order and should be at the IMU bookstore by the end of next week (hopefully sooner). If you prefer, you can probably obtain this text from online book sellers a few days sooner at similar cost if you order immediately.
• Until the new books arrive, we will be covering mainly Strings and String operations, plus the Java primitive data types and operators on these types. Information on these topics can be found in a variety of sources:
  • Our class notes will be posted here by tomorrow. They will include everything necessary for the first assignment.
  • If you have the Gilbert and McCarty book, much of chapter 3 and parts of the first two chapters are relevant.
  • Several copies of the Lewis and Loftus text will be on reserve in the Swain Hall library (room 208) by this afternoon.
  • Material related to lectures in the first couple weeks can be found most Java texts and a number of online sources, including the Language Basics lesson of Sun's Java tutorial.

Mon, Aug 28

• Welcome to C212!
• Assignment 1 is available.
• Please create your NT account prior to your first lab session this week.

Email chaynes@indiana.edu with questions or comments about this course web.