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IT 212 -- Examples

Index of Examples

• Terminal I/O: Hello 
• HexDump: Bitwise  HexDump
• Arrays and Methods: Array1  Array2  TwoDArray  RaggedArray
• Classes: BasketballPlayer  Person  Pet  Card  SimpleClock  BankAccount  VendingMachine  BabyDragon
• Arrays of Objects: PersonArray1  PersonArray2  SortPersonArray  SimpleDeck  Baseball 
• Inheritance: EmployeeHierarchy  SongHierarchy  Appointments  PetsDict 
• Read From Web: ReadFromWeb
• SQL via Python and SQLite3: SQLKids1  SQLKids2 
• Java Basics: HelloWorld   Greeter   Cel2Fahr   Distance   Cel2FahrWithValidation  
• Java Control Structures: Overtime   TempDesc   CountTo100   CountDownBy7s   LongSong  
• Java Classes: Person2   PersonArray2   Person3  

Terminal I/O

• Hello Example -- Print a "Hello, World" message to an output file.

Bitwise and HexDump

• Bitwise Example -- Compute bitwise and, or, exclusive or, and bitwise complement of the inputs.
• HexDump Utility -- Display characters in a file in both hex and character.

Lists and Methods

• Array1 Example   array1.py   values1.txt -- Read an array from a file, then compute the sum of the array.
  
• Array2 Example   array2.py   values1.txt -- Define and use two methods:
  (1) read_array that reads an array from a file, and
  (2) sum_array that computes the sum of the elements of an array.
• TwoDArray Example   two-d-array.py   course-scores.txt -- Define and use two methods:
  (1) read_2d_array that reads a two-dimensional array with two columns from a file, and
  (2) weighted_ave computes the weighted average of the items stored in a two-dimensional array.
• RaggedArray Example   ragged-array.py   values2.txt -- Define one method:
  (1) read_ragged_array that reads an array from a file.

Classes

• BasketballPlayer Example   UML Diagram   BasketballPlayer Class   Traditional Test Script -- Create and test a BasketballPlayer class.
• Person Example   UML Diagram   Person Class   Traditional Test Script   Unit Test Script -- Create a Person class with fields name, gender, age and method have_birthday.
• Card Example   UML Diagram   Card Class   Traditional Test Script   Unit Test Script -- Create a Card class with fields rank and suit. The instance methods are __init__, __str__, and color.
• Pet Example   UML Diagram   Pet Class   Traditional Test Script   Unit Test Script -- Create a Pet class with with fields name, animal_type, and methods vaccinate, is_vaccinated.
• SimpleClock Example   UML Diagram   SimpleClock Class   Traditional Test Script   Unit Test Script -- Create a SimpleClock class with field sec and method tick.
• BankAccount Example   UML Diagram   BankAccount Class   Traditional Test Script -- Create a BankAccount class.
• VendingMachine Example   UML Diagram   VendingMachine Class -- Create a VendingMachine class with private fields _num_quarters, _num_candy_bars, and public methods deposit_quarter, dispense_candy_bars.
• BabyDragon Example   BabyDragon Class   Test Script   Create a BabyDragon class with public methods eat, get_tossed, put_to_bed, rocked, go_for_walk and private methods is_hungry, must_go, wake_up_suddenly, passage_of_time.

Lists of Objects

• PersonArray1 Example   Person Class   Traditional Test Script -- Create and print an array of Person objects.
• PersonArray2 Example   Person Class   Traditional Test Script   Input File persons.txt -- Load an array of Person objects from an input file.
• SortPersonArray Example   Person Class   Traditional Test Script   Add __lt__ and __eq__ methods to the Person class to make the objects sortable. Also add a __repr__ method to the Person class so that the Person objects in an array may be represented in an understandable way.
• SimpleDeck Example   UML Diagram   SimpleDeck Class   Traditional Test Script   Unit Test Script -- Implement a SimpleDeck class that represents a deck of cards numbered from 1 to 20 without any suits.
• Baseball Example   BaseballCard Class   BaseballCardDeck Class   Traditional Test Script -- Create and test the BaseballCard and BaseballCardDeck classes. A BaseballCard object has name and position instance variables.

Inheritance

• EmployeeHierarchy Example   UML Diagram   Person Class   Employee Class   Executive Class   Traditional Test Script -- Use the inheritance hierarchy Person ← Employee ← Executive.
• SongHierarchy Example   UML Diagram   Song Class   KareokeSong Class   ChoirSong Class   Traditional Test Script -- Use the inheritance hierarchy KareokeSong → Song ← ChoirSong
• Appointments Example   UML Diagram   Appointment Class   MonthlyAppointment Class   OneTimeAppointment Class   Traditional Test Script -- Use objects from classes derived from Appointment, which are MonthlyAppointment and OneTimeAppointment.
• PetsDict Example   Animal Class: animal.py   Pet Class: pet.py   Traditional Test Script: test1.py   Unit Test Script: test2.py   Populate Classes from Files: test3.py -- In test3.py, populate classes from files, then lookup pet info by pet name. Each pet has a social media page, so a list of followers is included for each pet.
  Input files: pets.txt   followers.txt

Read from Web

• ReadFromWeb Example   readfromweb.py -- Read exchange rate from web and convert source amount to target amount.
  Read exchange rates from this website:
  http://facweb.cdm.depaul.edu/sjost/it212/rates.txt

SQL via Python and SQLite3

• SQLKids1 Example   sqlkids1.py -- Create SQL table using hardcoded Python statements.
• SQLKids2 Example   sqlkids2.py -- Create SQL table using data read from keyboard.

Java Basics

• HelloWorld Example   helloworld.py   HelloWorld.java -- The traditional HelloWorld application..
• Greeter Example   greeter.py   Greeter.java -- The user is prompted to input for a name. The application then constructs a greeting using that name.
• Cel2Fahr Example   cel2fahr.py   Cel2Fahr.java -- Convert a Celsius temperature to Fahrenheit.
• Distance Example   distance.py   Distance.java -- Compute distance to origin "as the crow flies."
• Cel2FahrWithValidation Example   cel2fahrwithvalidation.py   Cel2FahrWithValidation.java -- The traditional HelloWorld application..

Java Control Structures

• Overtime Example   Python: overtime.py   Java: Overtime.java   Compute total salary paying time and a half for any hours over 40.0.
• TempDesc Example   Python: tempdesc.py   Java: TempDesc.java   Given a Fahrenheit temperature, find a temperature descriptor.
• CountTo100 Example   Python: countto100.py   Java: CountTo100.java   Count to 100 (1, 2, 3, ..., 99, 100).
• CountDownBy7s Example   Python: countdownby7s.py   Java: CountDownBy7s.java   Count from 1000 to 1 backwards by sevens.
• LongSong Example   Python: longsong.py   Java: LongSong.java   Display all verses of the song "99 Bottles of Beer on the Wall".

Java Classes

• Person2 Example   Python: person.py   test.py   Java: Person.java   Test.java -- Translate the Person class into Java. Use public instance variables
• PersonArray2 Example persons.txt   Input File: Python: person.py   test.py   Java: Person.java   Test.java  -- Create an array of Person objects from data read from the persons.txt file, using public instance variables.
• Person3 Example   Java: Person.java   Test.java -- Translate the Person class into Java. Use private instance variables with public getters and setters. Use public instance variables