This document discusses key concepts in object-oriented programming including objects, classes, inheritance, polymorphism, abstraction, and encapsulation. It provides examples of how classes can be used to define watches as objects with properties like brand, dial type, and movement. It also shows how inheritance allows the creation of subclasses that extend parent classes, in this case an AdvancedWatch subclass extending the base Watch class. Constructors are demonstrated as a way to initialize new object instances.

1. OOPs Concepts
• Object
• Class
• Inheritance
• Polymorphism
• Abstraction
• Encapsulation

2. Object & Classes

3. Object & Classes
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
ABC’s Watch

4. Object & Classes
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch of Person_1
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch of Person_2
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch of Person_2

5. Object & Classes
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch
Person_1.watch
Person_2.watch
Person_3.watch

6. Constructor
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch
Person_1.watch(“TimeWear”,”Analog”,”Round”,”Quartz”,30,”Leather”)
Allocate Size when an object is
invoked as well as Initialize values

7. Inheritance

8. Inheritance
 SetTime()
 ShowTime()
 Brand
 DialType
 DialShape
 Movement
 WaterResistant
 StrapMaterial
Watch
 SetDate()
 ShowDate()
 SetDay()
 ShowDay()
 DateDisplayType
AdvancedWatch
extends

9. Inheritance - Types

10. Interface

11. Polymorphism
Shape(side)
Shape(length,breadth)
Shape(radius)
Overloading / Overriding

12. Abstraction

13. Encapsulation