The document discusses object-oriented programming concepts like classes, objects, inheritance, encapsulation, and composition. It provides examples of how these concepts can be implemented in Java. It explains that a class defines common attributes and behaviors of objects, while an object is an instance of a class. Inheritance allows classes to extend and override methods of parent classes. Encapsulation involves making attributes private and accessing them via getter/setter methods. Composition refers to objects having other objects as members.

1. Object Orientated Programming with Java Jussi Pohjolainen Tampere University of Applied Sciences

2. MOTIVATION

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7. OO CONCEPTS

14. Examples: Class to Object Class Object Car datsun 100a Human Jack Bauer Color red Laptop MacBook Pro String "some string" Array {1,2,3,2,4} ... ...

18. Car's Blueprint (Class) in UML Car brand motor amountOfDoors color hasFuzzyDices . .

19. From Class to Object datsun Datsun 100A 1.0 3 red true lambo Lamborghini Diablo 8.0 3 red false Car brand motor amountOfDoors color hasFuzzyDices . .

20. Car-class, extension Car brand motor amountOfDoors color hasFuzzyDices drive park brake

22. CLASSES AND OBJECTS IN JAVA

23. Person Class to Objects george George Smith 40 Teacher 09-12345 Jack Jack Puupää 60 Toimistopäällikkö 03-654321 eat sleep drinkBeer Person firstname lastname age profession phonenumber eat sleep drinkBeer

29. Basic Concept - Encapsulation private public method

35. JAVA TYPES

49. CONSTRUCTOR

56. COMPOSITION

58. UML notation

60. One to Many?

62. INHERITANCE

65. Picture about Inheritance C lass B F eatures: a,b,c C lass D F eatures: a,b,d,e,f a b C lass A features: a,b c d e C lass C F eatures: a,b,d,e f

72. Example <<abstract>> Mammal string name void makesound() {abstract} Elephant int trunkLength makesound()

73. Example <<abstract>> Figure int x, y double calculateArea() {abstract} Circle double radius double calculateArea() Rect double length, height double calculateArea()

74. INHERITANCE IN JAVA

84. Object clone() equals() finalize() toString() ... Human String name ... http://java.sun.com/javase/6/docs/api/java/lang/Object.html

97. POLYMORPHISM