Spring Semester 2009

Link to individual appointments script.

Fri Jun 19

Second summer session starts here's the list of port numbers:

44039 Brumbaugh, Margaret Susan
44040 Sorosky, Nicholas Tyler
44041 Turner, Sarah Megan
44042 Amanbayev, Talgat
44043 Baker, Jordan Keith
44044 Castner, Dean A
44045 Fernandez, Francis Paul
44046 Jefford, Logan Nance
44047 Kang, Yoon Mo
44048 Skaggs, Timothy Lee
44049 Al-Azdee, Mohammed
44050 Liu, Hongliu
44051 Nehrt, Nathan
44052 Pejaver, Vikas
44053 Rectanus, Lauren Caitlin
44054 Wright, Scott N
44055 Huang, Gang
44056 Keif, Echo Marie
44057 Paulraj, Sushmitha
44058 Sabetti, Leonard
44059 Sankaranarayanan, Madhuvanthi
44060 Shah, Neethu
44061 Sobieralski, Joseph Bernard
44062 Swaminathan, Rajeswari
44063 German, Dan-Adrian 

The text can be found here.

Mon Apr 27

Here's the JSP we developed in class today.

Appointments will continue until and including Wed May 6 around 6pm.

Here's where you can read on how to set up Java on your computer.

Wed Apr 22

Correct code for the problem discussed today:

import java.util.*;

class Student implements Comparable {
  double gpa; 
  Student(double gpa) {
    this.gpa = gpa; 
  } 
  public String toString() {
    return "S(" + this.gpa + ")"; 
  } 
  public int compareTo(Student other) { 
    if (this.gpa - other.gpa > 0) return 1; 
    else if (this.gpa - other.gpa < 0) return -1;
    else return 0; 
    // return (int) (this.gpa - other.gpa); does not work well!
    // 3.9 - 3.1 = 0.8 truncates to 0 instead of 1 and so on...
  } 
}

class One {
  public static void main(String[] args) {
    ArrayList students = new ArrayList();
    students.add(new Student(2.1)); 
    students.add(new Student(3.9)); 
    students.add(new Student(2.5)); 
    students.add(new Student(1.1)); 
    students.add(new Student(3.1)); 
    students.add(new Student(1.9)); 
    students.add(new Student(0.3)); 
    System.out.println( students );

    Collections.sort( students );

    System.out.println( students );    

  }
}

Code we will discuss in class today, also some slides from the past.

Mon Apr 20

Code developed in class today:

/* <applet code=One.class width=400 height=400>
   </applet>
 */

import java.applet.*; 
import java.awt.*; 
import java.awt.event.*; 

public class One extends Applet {
  public void init() {
    Umpire a = new Umpire(this); 
    this.addMouseMotionListener(a); 
  }
  public void paint(Graphics g) {
    
  }
}

class Umpire implements MouseMotionListener {
  One a; 
  Umpire(One a) {
    this.a = a; 
  } 
  public void mouseMoved(MouseEvent e) { 
    int x = e.getX(), y = e.getY();  
    xOld = -1; 
  }
  int xOld = -1, yOld = -1;
  public void mouseDragged(MouseEvent e) { 
    int x = e.getX(), y = e.getY(); 
    Graphics g = this.a.getGraphics(); 
    if (xOld >= 0) 
      g.drawLine(xOld, yOld, x, y); 
    xOld = x;
    yOld = y; 
  }
} 

Thu Apr 16

Notes from the lab today.

Wed Apr 15

Notes from today's class.

Mon Apr 13

Notes from today's class.

Thu Apr 09

Notes from yesterday's class and individual appointments:

• lecture notes (developing class Point, Line)
• example of defining an adjustable array class (called Vektor, can sort)
• basic dialog with the user (read a number or a String command to quit)
• sorting procedure (bubble sort, developing our own)
• discussing static vs. non-static variables (on a Circle example)
• determining an interval of time (example of using % meaningfully, like in the magic square example)

Mon Apr 06

Slides used in class today.

Notes from today's class.

Wed Apr 01

Here's a hint on how you can sort using built-in Java utilities.

Here's a simplification of it (note the use of java.util.Arrays.toString()).

Also, here's how you print formatted output:

import java.util.*;

class One {
  public static void main(String[] args) {
    int[][] m = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    System.out.println(Arrays.deepToString(m));
    for (int i = 0; i < m.length; i++) {
      for (int j = 0; j < m[i].length; j++) 
        System.out.printf("%4d ", m[i][j]);
      System.out.println(); 
    }
  } 
}

Wed Apr 01

Here's a selection of snapshots from our discussion in class:

• one: understanding the problem
• two: writing down some of the steps
• three: applying the steps to a larger instance of the problem
• four: our program in action (for a magic square of size 3)
• five: fixing the output for large problem instances (left)

Mon Mar 30

Notes from today's class.

Fri Mar 27

Reading assignment for next week: Ivor Horton book chapters 1-4, 5.

Older notes about for loops and patterns: here.

Here's a more comprehensive set of older notes for total beginners:

(Note: these are from an older book I wrote with Nick Boyce a few years ago.)

1. What computers can do and how. Programming. Java
2. Algorithms. Programs. Mechanics of implementation in Java
3. Objects and classes, and other basic stuff in Java
4. Numbers. String. Before Scanners
5. Syntax. The structure of main
6. Boolean values, expressions, if statements
7. Introduction to user-defined types. Classes
8. Diagrams for an operational perspective
9. Reality Check (Part One)
10. Classes, objects, constructors
11. Branches and paths. Ifs
12. Java review by Dilbert (Part One)
13. Loops
14. More practice with loops. Tokenizers
15. Nested loops, other loops, loops and a half, scalable patterns
16. Developing a simple interactive game
17. Another case study: designing fractions
18. Milestones Review (with diagrams)
19. Java arrays
20. Partially filled arrays. Array parameters and return values. Simple array algorithms
21. Java Fandango (Review, Andy Kaufman style)
22. Parallel arrays. Arrays of object data. Vectors.
23. Inheritance and the class extension mechanism
24. Vectors, hashtables, leftovers
25. Basic event handling and such Java review by Dilbert (Part Two)

Some quizzes from the past as well:

1. Batch One
2. Batch Two
3. Batch Three
4. Batch Four
5. Batch Five
6. Batch Six
7. Batch Seven (try this if you think you know for loops)
8. Batch Eight
9. Batch Nine
10. Batch Ten

11. An older exam

Mon-Wed Mar 23-25

What's Due and Class Notes pages now including information about the remaining assignments.

Individual e-mail messages sent Tue at about noon. Available times for appointments also posted, above.

Here's one of the programs developed in class today:

class One {
  public static void main(String[] args) {
    int size = 15; 
    for (int line = 0; line < size; line++) { 
      for (int col = 0; col < size; col++) {
        if (line == size-1 || line == 0 || col == 0 || col == size-1) 
          System.out.print("* "); 
        else 
          System.out.print("  "); 
      } 
      System.out.println(); 
    } 
  } 
}

Thu Mar 12

Notes from this past week to be posted here.

Today in lab we looked at these past notes.

Thu Mar 05

Discussion on how to structure the program from lab today.

Wed Mar 04

Code we developed in class on Monday: first, second program.

Code we developed in class today: first, second program.

Tue Mar 03

How to provide Homework Three database access from the web: notes.

Mon Mar 02

Today in class we'll discuss:

• accidental reloads and server-side state
• setting up namespaces in server-side state

Meanwhile appointments for the week can still be made here.

Thu Feb 26

Things brought up in lab today:

• old lab about HTTP (remember redirection by get_session_id() in Homework Five)
• discussion about keeping state (client side, part I)
• discussion about keeping state (server side, part II)

Wed Feb 25

Today in class we discuss the midterm prototype.

We also finish implementing Homework Five: notes from today's class.

Tue Feb 24

Notes from yesterday's class.

Mon Feb 23

Office hours, individual appointments times for this and next week.

Today we wrap up the homework assignments with Homework No. 5.

Thu Feb 19

We discussed Homework Four in class today: program one, program two.

We also reviewed the PHP installation steps for those who didn't have PHP installed already.

Wed Feb 18

Things discussed in class today.

Tue Feb 17

Please read this document, sample SQL query development for Homework Three.

Mon Feb 16

We start discussing Homework Three.

Thu Feb 12

These are the notes from the lab today.

Wed Feb 11

Notes for today's class.

Tue Feb 10

Office hours today: 9:00am-12:30pm in Lindley Hall 201D.

Mon Feb 9

Today's set of notes.

Thu Feb 5

Notes from yesterday's class.

Notes from today's lab.

Mon Feb 2

Notes from today's class, and the working program.

Wed Jan 28

Campus is closed until noon today due to snowy conditions. Updates.

Class is cancelled. It would have been taught by Richard Pinapati.

Hope you can make it to the lab tomorrow, to be taught by Josh LaMar.

Mon Jan 26

Here's the set of notes for this week.

I'm in North Carolina (at Emergent, the maker of Gamebryo) until Friday night.

Josh LaMar will teach Mon lecture and Thu lab. Richard Pinapati will teach Wed lecture.

They're both outstanding teachers and will help you with everything, including Homework Two.

Sat-Sun Jan 24-25

Homework Two is actually due on 02/01 -- typo fixed on the What's Due? page.

Notes (as written for last semester's class) for all assignments posted now.

Notes for next week to be posted (and to be announced here) shortly.

Thu Jan 22

Notes to be used in lab today.

Wed Jan 21

Notes for the week:

• Introduction to Python
• Introduction to Perl and CGI

Local copies of the Univ. of Virginia tutorial: one, two, three, four, five, six, seven, eight.

Mon Jan 19

Martin Luther King Day. Classes do not meet.

Thu Jan 15

Lab today started a bit late, due to inclement weather.

Here are the notes we used for the second part of the lab.

Wed Jan 14

Here's a link to notes we might use in class today.

Office hours will likely be: MTWRF 9:00-10:00am in LH201D (Lindley Hall 2nd floor, 201 suite).

Office hours also by appointment (e-mail dgerman@indiana.edu to determine a convenient time).

Tue Jan 13

List of students and ports for the semester.

Requested information about the lab (venue and time).

Mon Jan 12

Class starts today in I107 at 11:15am.