Object-Oriented Programming: Defining Custom Classes Quiz
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Questions and Answers

What is the primary reason for defining programmer-defined classes?

  • To restrict access to certain data
  • To simplify the programming process
  • To customize classes for specific applications (correct)
  • To use standard API classes more effectively

    • What are the two characteristics shared by real-world objects?

  • Behavior and complexity
  • State and behavior (correct)
  • State and adaptability
  • State and complexity

    • What is an example of a programmer-defined class from the given text?

  • Standard API Class
  • LibraryMember Class
  • BankAccount Class (correct)
  • Course Voting System Class

    • Which method in the Student class is responsible for registering a unit?

    <p>void registerUnit()</p> Signup and view all the answers

    What is the purpose of the Employee System Class mentioned in the text?

    <p>Managing employee data and functions</p> Signup and view all the answers

    Why do real-world objects need to have state and behavior?

    <p>To model real-world entities accurately</p> Signup and view all the answers

    What represents the state of an object in a program?

    <p>Variables with their current values</p> Signup and view all the answers

    What defines the behavior of an object in a program?

    <p>Set of methods</p> Signup and view all the answers

    In a class definition, what defines the type of variables the object can have and the type of method the object can execute?

    <p>Data members</p> Signup and view all the answers

    What is a special method that is executed when a new instance of the class is created?

    <p>Constructor method</p> Signup and view all the answers

    Which term is interchangeable with 'instance' in the context of software objects?

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

    What does a class member declaration with 'private' modifier indicate?

    <p>Accessible only within the same class</p> Signup and view all the answers

    What does a class member declaration with 'public' modifier indicate?

    <p>Accessible to all classes</p> Signup and view all the answers

    'Data members', 'methods', and 'constructors' are collectively known as:

    <p>'Class members'</p> Signup and view all the answers

    What does the 'increaseVolume' method do in the context of a Radio object?

    <p>Increases the volume by 1 unit</p> Signup and view all the answers

    What does 'ownerName = name;' represent in the 'setOwnerName' method of the Bicycle class?

    <p>Initialization of ownerName variable</p> Signup and view all the answers

    What is the primary reason for using programmer-defined classes in object-oriented programming?

    <p>To allow for customization of classes specific to the application's needs</p> Signup and view all the answers

    In the context of object-oriented programming, what represents the state of an object in a program?

    <p>Data members</p> Signup and view all the answers

    Which method in the given class 'Student' is responsible for registering a unit?

    <p>void registerUnit()</p> Signup and view all the answers

    What does the term 'ownerName = name;' represent in the 'setOwnerName' method of a class?

    <p>Assigning the value of 'ownerName' to 'name'</p> Signup and view all the answers

    Which characteristic is shared by real-world objects in the context of object-oriented programming?

    <p>State and behavior</p> Signup and view all the answers

    What is an example of a programmer-defined class from the given text?

    <p>BankAccount Class</p> Signup and view all the answers

    What represents the state of an object in a program?

    <p>Variables with their current values</p> Signup and view all the answers

    What is the purpose of a constructor in a class?

    <p>To initialize data members when a new instance of the class is created</p> Signup and view all the answers

    Which term is interchangeable with 'instance' in the context of software objects?

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

    What does a class member declaration with 'private' modifier indicate?

    <p>It can only be accessed within its own class</p> Signup and view all the answers

    What defines the behavior of an object in a program?

    <p>Methods defined by the class</p> Signup and view all the answers

    What is the primary reason for defining programmer-defined classes?

    <p>To organize and reuse code for similar objects</p> Signup and view all the answers

    'Data members', 'methods', and 'constructors' are collectively known as:

    <p>'Class members'</p> Signup and view all the answers

    'ownerName = name;' represents what in the 'setOwnerName' method of the Bicycle class?

    <p>'ownerName' being assigned a new value</p> Signup and view all the answers

    In a class definition, what are variables, constructors, and methods collectively known as?

    <p>'Class members'</p> Signup and view all the answers

    Why do real-world objects need to have state and behavior?

    <p>To enable them to interact with other objects</p> Signup and view all the answers

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