Notes From Class

Week 1: January 26, 28 and 30, 2004

If you do not have a Glue computer account, please get one. See the FAQ's for step-by-step instructions.
If you need a good terminal emulator for your home PC, go http://www.tucows.com and search on "Term CRT." Take a look at "CRT 4.0.2" -- at home I have an earlier version and I think it's great.

Week 3: February 9, 11, and 13, 2004

The class reader is available at the Engineering Copy Center. The cost is $15.00.

If you have downloaded the bulletproof FTP program to your PC at home, you'll need the IP addresses for wam and glue to insert into the site manager (which is on the left-most pulldown menu). The IP addresses are as follows:

    Site                                  IP addresses
    --------------------------------------------------
    wam.umd.edu                           128.8.10.141
                                          128.8.10.142
                                          128.8.10.143

    glue.umd.edu                           128.8.10.68
                                           128.8.10.71
    --------------------------------------------------

Week 4: February 16, 18 and 20, 2004

Take a look at this article in the Washington Post on the Post Google Era .....

Click here for a good tutorial on UNIX. Many of the UNIX commands that we have covered in class are described on the first page -- "A Sample Login Session." As a starting point, I'd learn how to use:

    Unix Commands
    --------------------------------------------------------------------------------
    1. cd                       <-- change to home directory
    2. cd file1                 <-- change to directory file1
    3. ls and ls -ls and ls -tl <-- list contents of a directory
    4. mkdir file1              <-- make a directory called file1
    5. rmdir file1              <-- remove directory file1
    6. cp file1 file2           <-- copy file1 to file2
    7. mv file1 file2           <-- move file1 to file2
    --------------------------------------------------------------------------------

    Text editor commands
    --------------------------------------------------------------------------------

    1. vi filename              <-- use vi editor to change contents of filename.

    For example, the command sequence:

       prompt >> cd ../pub
       prompt >> vi Welcome.html
       prompt >> vi resume.html
       prompt >> vi australia.html

    moves your shell to the public directory and then systemantically creates the
    HTML files for your home page, resume and trip page. Notice that each file
    name has the "html" extension -- web browsers need this information.

    The class reader contains a list of basic editor commands. 
    --------------------------------------------------------------------------------

Homework 1 is available.

Week 9: March 15, 17, and 19, 2004

Midterm 1. March 17. Closed book. The exam will cover Chapters 1 and 2 of the class text, introduction to object-oriented programming and Java, and anything written on the board during the first eight weeks of the semester.

Week 10: March 22, 24, and 26, 2004

Spring Break ....

Week 12: March 29, 31. April 2, 2004

Homework 2 is available.

Week 14: April 12, 14, and 16, 2004

Homework 3 is available.
No class on April 16. Please use the class time to work on the homework!

Week 15: April 19, 21 and 23, 2004

I have reformatted the output on my solution to the WaterFlow problem. As it turns out, compared to C, Java provides very limited support for fomatting and aligning columns of numbers. So my solution is pretty basic -- I use the variables "fPop" and "fWaterFlow" to store the population and waterflow, respectively. Then I format the output with:

    DecimalFormat formatPop = new DecimalFormat( "0000000" );
    String output1 = formatPop.format( fPop );

    DecimalFormat formatFlow = new DecimalFormat( "00.0" );
    String output2 = formatFlow.format( fWaterFlow );

    System.out.println("   " + output1 + "        " + output2 );

The abbreviated output is as follows:

prompt >> java WaterFlow
Water Flow Computation
----------------------
Population        Q(p)
             (m^3/min)
======================
   0001000        03.8
   0002000        05.4
   0003000        06.6
   0004000        07.6
   0005000        08.4

   .... lines of output removed .....

   0900000        81.1
   1000000        83.5

Change of plan ... I will go over the solutions to this homework in class next Wednesday. So make sure you get the homework to me on Friday!!!

Week 16: April 26, 28 and 30, 2004

Midterm 2. April 26. Open book. Java programming.
Homework 4 is available.

Week 17: May 3, 5 and 7, 2004

Week 18: May 10, 2004

Final Exam: May 17, 8.00am-10.00am. The exam will be open book and open notes. There are three questions for a total of 80 points. The first is on object-oriented program development and a few basic things about Java. Two and three are Java programs followed by multi-part questions (just like midterm 2).