UNIT-1
PART-B
1. Characteristics of OOP
Object means a real-world entity such as a pen, chair, table, computer,
watch, etc. Object-Oriented Programming is a methodology or paradigm
to design a program using classes and objects. It simplifies software
development and maintenance by providing some concepts:
o Object
o Class
o Inheritance
o Polymorphism
o Abstraction
o Encapsulation
Apart from these concepts, there are some other terms which are used in
Object-Oriented design:
o Coupling
o Cohesion
o Association
o Aggregation
o Composition
,Object
Any entity that has state and behavior is known as an object. For example, a
chair, pen, table, keyboard, bike, etc. It can be physical or logical.
An Object can be defined as an instance of a class. An object contains an
address and takes up some space in memory. Objects can communicate
without knowing the details of each other's data or code. The only necessary
thing is the type of message accepted and the type of response returned by
the objects.
Example: A dog is an object because it has states like color, name, breed,
etc. as well as behaviors like wagging the tail, barking, eating, etc.
Class
Collection of objects is called class. It is a logical entity.
A class can also be defined as a blueprint from which you can create an
individual object. Class doesn't consume any space.
, Inheritance
When one object acquires all the properties and behaviors of a parent object, it is known as
inheritance. It provides code reusability. It is used to achieve runtime polymorphism.
Polymorphism
If one task is performed in different ways, it is known as polymorphism. For example: to
convince the customer differently, to draw something, for example, shape, triangle, rectangle,
etc.
In Java, we use method overloading and method overriding to achieve polymorphism.
Another example can be to speak something; for example, a cat speaks meow, dog barks woof,
etc.
Abstraction
Hiding internal details and showing functionality is known as abstraction. For
example phone call, we don't know the internal processing.
Encapsulation
Binding (or wrapping) code and data together into a single unit are known as
encapsulation. For example, a capsule, it is wrapped with different
medicines.
A java class is the example of encapsulation. Java bean is the fully
encapsulated class because all the data members are private here.
PART-B
1. Characteristics of OOP
Object means a real-world entity such as a pen, chair, table, computer,
watch, etc. Object-Oriented Programming is a methodology or paradigm
to design a program using classes and objects. It simplifies software
development and maintenance by providing some concepts:
o Object
o Class
o Inheritance
o Polymorphism
o Abstraction
o Encapsulation
Apart from these concepts, there are some other terms which are used in
Object-Oriented design:
o Coupling
o Cohesion
o Association
o Aggregation
o Composition
,Object
Any entity that has state and behavior is known as an object. For example, a
chair, pen, table, keyboard, bike, etc. It can be physical or logical.
An Object can be defined as an instance of a class. An object contains an
address and takes up some space in memory. Objects can communicate
without knowing the details of each other's data or code. The only necessary
thing is the type of message accepted and the type of response returned by
the objects.
Example: A dog is an object because it has states like color, name, breed,
etc. as well as behaviors like wagging the tail, barking, eating, etc.
Class
Collection of objects is called class. It is a logical entity.
A class can also be defined as a blueprint from which you can create an
individual object. Class doesn't consume any space.
, Inheritance
When one object acquires all the properties and behaviors of a parent object, it is known as
inheritance. It provides code reusability. It is used to achieve runtime polymorphism.
Polymorphism
If one task is performed in different ways, it is known as polymorphism. For example: to
convince the customer differently, to draw something, for example, shape, triangle, rectangle,
etc.
In Java, we use method overloading and method overriding to achieve polymorphism.
Another example can be to speak something; for example, a cat speaks meow, dog barks woof,
etc.
Abstraction
Hiding internal details and showing functionality is known as abstraction. For
example phone call, we don't know the internal processing.
Encapsulation
Binding (or wrapping) code and data together into a single unit are known as
encapsulation. For example, a capsule, it is wrapped with different
medicines.
A java class is the example of encapsulation. Java bean is the fully
encapsulated class because all the data members are private here.
