Overlorded Constructor, Composition & Packages Quiz
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Questions and Answers

What is the purpose of using the keyword 'this' in Java?

  • To access instance variables when they are shadowed by local variables or method parameters (correct)
  • To create an instance of a package
  • To define a new method within a class
  • To declare a new object of a class

    • In the context of object-oriented programming, what is the purpose of overloading constructors?

  • To create multiple methods with the same name but different parameters (correct)
  • To define new packages within a class
  • To prevent conflicts between local and instance variables
  • To access and modify private variables of a class

    • What is the main purpose of using composition in Java?

  • To create complex objects by combining simpler objects (correct)
  • To handle exceptions in the code
  • To access and modify private variables of a class
  • To define multiple constructors within a class

    • Why is it important for set methods to verify the new values of private variables in Java?

    <p>To place the private variables into an appropriate consistent state</p> Signup and view all the answers

    What does a package provide in Java?

    <p>A way to organize related classes and interfaces</p> Signup and view all the answers

    In Java, what is the purpose of using the keyword 'this'?

    <p>To access an object's reference to itself and its instance variables</p> Signup and view all the answers

    What is the main purpose of overloading constructors in Java?

    <p>To initialize the values of instance variables</p> Signup and view all the answers

    What is the significance of using composition in Java?

    <p>To improve code reusability and maintainability</p> Signup and view all the answers

    Why is it important for set methods to verify the new values of private variables in Java?

    <p>To ensure that the new values maintain the internal consistency of the object</p> Signup and view all the answers

    What does a package provide in Java?

    <p>A means to organize classes and interfaces into namespaces</p> Signup and view all the answers

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