Bulacan State University IT 207: Designing Methods in Object-Oriented Programming
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Questions and Answers

What does the 'final' specifier indicate in a method declaration?

  • The method returns a value
  • The method is abstract
  • The method cannot be overridden (correct)
  • The method is static

    • Which access modifier allows other classes to use a specific method?

  • public (correct)
  • private
  • package-private
  • protected

    • What does the 'static' optional specifier indicate in a method declaration?

  • The method is a class method (correct)
  • The method is final
  • The method does not return a value
  • The method is abstract

    • What is the purpose of the return type in a method declaration?

    <p>To indicate the data type of the value returned by the method</p> Signup and view all the answers

    Which part of a method declaration specifies the value passed to the method?

    <p>Parameter list</p> Signup and view all the answers

    What is the naming convention for a method that starts with a verb in lowercase followed by adjectives and nouns?

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

    Which access modifier allows a method to be visible to all classes everywhere?

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

    What does the private access modifier specify about a method?

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

    How many levels of access control are mentioned for methods?

    <p>2</p> Signup and view all the answers

    What does the protected access modifier specify about a member?

    <p>It can only be accessed within its own package and by a subclass of its class in another package</p> Signup and view all the answers

    Study Notes

    Method Specifiers and Access Modifiers

    • Final Specifier: Indicates that a method cannot be overridden in subclasses, enforcing a fixed behavior.
    • Public Access Modifier: Allows any class to access the specific method, providing the broadest visibility.
    • Static Specifier: Indicates that a method belongs to the class itself rather than to any specific instance, allowing it to be called without creating an object.
    • Return Type Purpose: Specifies the type of value a method will return after execution, essential for understanding what the calling code can expect.
    • Parameters in Method Declaration: The part of the declaration that specifies values passed into the method for processing, defining the input the method can receive.

    Naming Conventions

    • Method Naming: Follows the convention of starting with a verb in lowercase, followed by adjectives and nouns, promoting clear and descriptive identifiers.

    Access Control Levels

    • Public Modifier: Grants visibility to all classes universally, ensuring that the method can be utilized across packages.
    • Private Access Modifier: Restricts method visibility to the defining class only, encapsulating functionality and protecting internal states.
    • Levels of Access Control: Typically comprises four: public, protected, private, and default (package-private), which provide varying degrees of access.
    • Protected Access Modifier: Allows visibility to the defining class, subclasses, and classes within the same package, facilitating inheritance while controlling access.

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    Description

    Learn about the different parts of a method declaration in Object-Oriented Programming. Understand how to specify information needed to call a method, with examples and explanations provided.

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