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Java OOP

Quiz by Pooja

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17 questions
Show answers
  • Q1
    What keyword is used in Java to provide the ability to refer to the current class instance within its own methods?
    super
    class
    new
    this
    30s
  • Q2
    Which of the following is a principle of Object-Oriented Programming (OOP)?
    Polymorphism
    Inheritance
    Abstraction
    Encapsulation
    30s
  • Q3
    What is the process of defining a new class based on an existing class called?
    Encapsulation
    Polymorphism
    Abstraction
    Inheritance
    30s
  • Q4
    Which OOP principle allows objects to take on multiple forms?
    Encapsulation
    Inheritance
    Abstraction
    Polymorphism
    30s
  • Q5
    What is a blueprint for creating objects in Object-Oriented Programming (OOP)?
    Variable
    Method
    Object
    Class
    30s
  • Q6
    Which OOP principle focuses on bundling data with the methods that operate on that data?
    Polymorphism
    Inheritance
    Abstraction
    Encapsulation
    30s
  • Q7
    What keyword is used in Java to create an object of a class?
    class
    super
    this
    new
    30s
  • Q8
    Which OOP principle allows different classes to be treated as instances of a single parent class?
    Encapsulation
    Abstraction
    Polymorphism
    Inheritance
    30s
  • Q9
    What is the process of hiding the internal implementation details of an object and only showing the necessary features known as?
    Inheritance
    Abstraction
    Polymorphism
    Encapsulation
    30s
  • Q10
    What is an example of an OOP design principle that emphasizes separation of concerns and promotes code organization?
    Abstraction
    Polymorphism
    Encapsulation
    Inheritance
    30s
  • Q11
    In Java OOP, what is the process of creating an object from a class called?
    Instantiation
    Inheritance
    Abstraction
    Polymorphism
    30s
  • Q12
    Which keyword is used in Java to inherit a class?
    inherits
    implements
    derives
    extends
    30s
  • Q13
    What is encapsulation in Java OOP?
    Encapsulation is the process of creating objects from classes.
    Encapsulation is the process of inheriting a class in Java.
    Encapsulation is the implementation of multiple forms of a method in Java.
    Encapsulation is the bundling of data and methods that operate on that data in a single unit (class), and the restriction of access to some of the object's components.
    30s
  • Q14
    We can explicitly code super() to access what?
    superclass constructors
    superclass members
    superclass methods
    superclass variables
    30s
  • Q15
    We access members of the superclass above a subclass using the extends keyword?
    true
    false
    30s

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