Overview of collected Java teaching materials M. Ivanovic, N. Ibrajter

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Overview of collected Java teaching materials
M. Ivanovic, N. Ibrajter
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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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Collected material

• Berlin prepared slides in German (based on
  previous teaching material)
• N. Ibrajter translated several lessons in English
• Novi Sad prepared Java book in Serbian (good base
  for teaching .ppt material)
• University of Aberdeen (complete .ppt course
  material from Internet)

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Novi Sad and Berlin Course Differences

• Both courses cover same topics
• Presentation will show the differences by the
  example of one topic
• Berlin students have the course in 1st and Novi
  Sad students in 3rd semester
• Berlin course, mainly concerns to introduce OO
  programming paradigm
• Novi Sad course is much more language specific

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Same Content of the Course

• Primitive Data Types
• Operators
• Operations
• Statements
• Object-Oriented Programming in Java
• Objects
• Classes
• References
• Inheritance
• Polymorphism
• Exceptions
• Inner Classes

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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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Topics in English

• Introduction (1)Objects, Classes, Abstract Data
  Types (48 slides)
• Introduction (2)Useful Concepts of OO Paradigm
  (78 slides)
• Inheritance (56 slides)
• Exception Handling (46 slides)

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Introduction (1)Objects, Classes, Abstract Data
Types

• Programming paradigms imperative and
  object-oriented
• Data abstraction Abstract data types Classes
  Instances
• Instance variables, instance methods
• Example Stack

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Introduction (2)Useful Concepts of OO Paradigm

• ADT reuse (classes)
• Parenthesis structure checked by a stack
• Transformation of recursion to iteration with a
  stack
• Comparison of an imperative with an OO
  programTimeTable.java, Time.java,
  Scheduler.java
• ADT as Java API classes String
• Data classes Pascal, C
• Further conceptsOverloading, this the actual
  object, private methods, public variables,
  alias-problem, lexicographical order

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Inheritance

• Inheritance
• Subclasses
• Superclasses
• Hierarchy building
• Simple inheritance (Java)Multiple inheritance
  (C)
• Once more private, public ? protected
• Polymorphism Method overloading (ltgt overriding)
• Class hierarchy and the class Object'
• Dynamic binding dynamic search for methods
• final-methods, abstract classes
• "Wrapper-classes"

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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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NS Course OO Paradigm and Its Concepts 1/2

• 19 slides
• 8 code slides, the rest are textual slides
• No pictures
• Strictly Java language specific
• On quite a high level considering terminology
• Cover OOP paradigm, notion of object, class and
  reference

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NS Course OO Paradigm and Its Concepts 2/2

• Basic philosophy structuring programs in a way
  the objects are organized in a real world
• Creating and using types that group data and code
  segments which use the data
• Type values are called instances
• Basic notions of OO programming style
• object
• class
• inheritance

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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and Conclusion

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Chapters 8 and 9Inheritance

• Inheritance
• Subtyping
• Substitution
• Polymorphic variables
• Static and dynamic type

• Method polymorphism
• Overriding
• Dynamic method lookup

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The Object class
All classes inherit from Object
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DoME hierarchy
All classes inherit from Object
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Polymorphic variables

• Instance variables in Java can be
  polymorphic.(They can refer to objects of more
  than one type but not simultaneously!)
• They can hold instances of the declared type, or
  of subtypes of the declared type.
• This is another example of substitution.

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Adding items to an ArrayList

• public class Database
• private ArrayList items
• public void addItem(Item theItem)
• items.add(theItem)
• ...

Sometimes contains a CD, sometimes a Video
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Subtyping and assignment
subtype instances may be assigned to supertype
variables (substitution again)
Vehicle v1 new Vehicle() Vehicle v2 new
Car() Vehicle v3 new Bicycle()
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Content

1. SubProject site
2. Collected material
3. Some topics by Berlin way
4. Same topic by Novi Sad way
5. Some Internet material
6. Further steps and conclusion

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Further Steps and Conclusion

• Courses organize content of the topics by
  different criteria
• The main impression is that the major goal of the
  Berlin course is to offer a student a clear
  overview of the OOP using Java
• First semester, first programming language
• NS course goal, on the other hand, is to deeply
  involve students with the Java programming
  language specifics
• Third semester, second programming language

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Conclusion

• Berlin teaching material
• More interesting
• Much more easy to follow
• Puts stress on the difference between OOP and
  other programming paradigms
• Clearly shows the difference between Java and
  Pascal, C
• Introduces some basic data structures, like stack

• NS teaching material
• More compact
• Student is forced to struggle with terminology
• Puts stress on the Java programming language
  specifics
• More detailed
• Students prefer this way of presentation
• Most of them like to minimize home work
• No suitable additional literature

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General Idea about Course Material

• Prepare a collection of different topics and
  concepts (just language, emphasize on OO design
  and style of programming, advanced topics, some
  real complex applications,). Use different
  versions of the same topics (Berlin. Novi Sad,
  Timisoara, Belgrade, Skopje,)
• Prepare complete materials for various stiles of
  courses
• Kernel of same basic topics
• Material for a general course on Java programming
  language
• Material for OO programming course
• Possibility to prepare different courses based on
  available material (lecturer can make specific
  selection)