IT2030 Object Oriented Programming Lecture 02
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Questions and Answers

What is object-oriented programming?

Object-oriented programming is a method of implementation in which programs are organized as cooperative collections of objects, each representing an instance of some class, united via inheritance relationships.

Which of the following is NOT a learning outcome of the lecture?

  • Encapsulation
  • Error Handling (correct)
  • Polymorphism
  • Abstraction
  • A class is the abstract definition of the ______.

    data type

    An object is a specific instance of a function in a class.

    <p>False</p> Signup and view all the answers

    Match the following concepts with their definitions:

    <p>Abstraction = The concept of hiding the complex reality while exposing only the necessary parts. Encapsulation = Bundling the data and methods that operate on the data. Inheritance = A mechanism where a new class can inherit the properties and methods from an existing class. Polymorphism = The ability to present the same interface for differing underlying forms (data types).</p> Signup and view all the answers

    What is the difference between a class and an object?

    <p>A class is a blueprint for creating objects and defines a data type, while an object is an instance of a class.</p> Signup and view all the answers

    What is a fundamental characteristic of object-oriented programming?

    <p>Cooperative collections of objects</p> Signup and view all the answers

    What does encapsulation refer to in the context of object-oriented programming?

    <p>Encapsulation refers to bundling the data and the methods that operate on that data within a single unit, typically a class.</p> Signup and view all the answers

    In object-oriented programming, ______ allows for solving complex problems easily.

    <p>objects</p> Signup and view all the answers

    Study Notes

    Learning Outcomes

    • Students will revise Object Oriented Concepts learned in Year 1.
    • Key topics include Object Oriented Programming (OOP), Classes and Objects, Abstraction, Encapsulation, Inheritance, Polymorphism, and Interfaces.
    • Differences between C++ and Java in writing simple OOP programs will be explored.

    Object Oriented Programming (OOP)

    • OOP organizes programs as cooperative collections of objects.
    • Each object is an instance of a class and belongs to a hierarchy of classes via inheritance relationships.
    • Allows for solving complex problems more easily by utilizing collaboration among objects.

    Complex Systems

    • A complex system is created using smaller, independent subsystems.
    • These subsystems contain their own data and functions.
    • Reusable independent units can be applied to various problems.

    Classes

    • A class serves as an abstract definition of a data type.
    • It encompasses data elements (attributes) and operations (methods) applicable to the data type.
    • Entities represented can include things, people, or abstract concepts.

    Objects

    • An object is a specific instance of a class, functioning as a blueprint for data organization.
    • Objects store data and perform actions based on the defined attributes and methods of their class.
    • Multiple objects can be created with the same structure based on a single class definition.

    Example of Class in C++

    • The class definition for a Student in C++ includes attributes like studentNo, name, and CA_marks.
    • Attributes in classes can be private, controlling their accessibility and encapsulating the data.

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    Description

    This quiz covers the essential concepts of Java classes and objects from the IT2030 Object Oriented Programming course. Students will review their understanding of object-oriented programming principles learned in the first year. Prepare to test your knowledge on these foundational topics and enhance your programming skills.

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