All Flashcards
How is the 'super' keyword used in GUI frameworks?
To call the superclass's event handling methods when creating custom components.
How is inheritance used in game development?
To create specialized game entities (e.g., enemies, characters) that inherit common properties from a base class.
How is method overriding used in database systems?
To customize query execution strategies for different database engines.
How is the concept of inheritance applied in operating systems?
To create different types of processes or threads that inherit common functionalities from a base class.
How is code reusability employed in web development?
Using component libraries and frameworks to avoid rewriting common UI elements and functionalities.
How is inheritance used in creating different types of vehicles?
A base 'Vehicle' class can be extended to create 'Car', 'Truck', and 'Motorcycle' classes, each inheriting common properties but having unique attributes.
How is method overriding used in implementing different sorting algorithms?
A base 'SortAlgorithm' class can be extended to implement 'BubbleSort', 'MergeSort', and 'QuickSort', each overriding the 'sort' method with its specific logic.
How are constructors and inheritance used in creating different types of bank accounts?
A base 'BankAccount' class can be extended to create 'SavingsAccount' and 'CheckingAccount' classes, each with its own constructor to set initial balances and interest rates.
How is the concept of inheritance applied in creating different types of employees in an organization?
A base 'Employee' class can be extended to create 'Manager', 'Developer', and 'Analyst' classes, each inheriting common properties but having unique roles and responsibilities.
How is method overriding used in implementing different payment methods for an e-commerce platform?
A base 'PaymentMethod' class can be extended to implement 'CreditCardPayment', 'PayPalPayment', and 'BankTransferPayment', each overriding the 'processPayment' method with its specific logic.
Why use 'super' for methods?
To reuse the superclass's implementation of a method in a subclass, avoiding code duplication.
What's the benefit of avoiding code duplication?
Reduces maintenance effort, improves code readability, and minimizes potential errors.
How does 'super' relate to inheritance?
It allows a subclass to access and utilize the inherited methods and constructors of its superclass.
When should you override a method?
When a subclass needs to provide a specific implementation that differs from the superclass's implementation.
What is the purpose of the @Override annotation?
It indicates that a method is overridden, allowing the compiler to check for errors.
Why is code reusability important?
It saves time and resources by leveraging existing code instead of rewriting it.
Explain the relationship between a subclass and its superclass.
A subclass inherits properties and behaviors from its superclass, allowing it to extend or modify the superclass's functionality.
What is the role of a constructor in object creation?
A constructor initializes the object's state by setting initial values for its attributes.
How does 'super' promote code maintainability?
By centralizing common logic in the superclass and allowing subclasses to build upon it, changes in the superclass automatically propagate to subclasses.
What is the significance of the 'is-a' relationship in inheritance?
It represents that a subclass is a specialized type of its superclass, inheriting its characteristics and behaviors.
What is the difference between using 'super' to call a constructor vs. calling a method?
Constructor: initializes the object's state | Method: executes a specific action or behavior.
What is the difference between overriding a method and overloading a method?
Overriding: Providing a new implementation in a subclass | Overloading: Providing multiple methods with the same name but different parameters in the same class.
What is the difference between inheritance and composition?
Inheritance: A class acquires properties from a parent class | Composition: A class contains instances of other classes as its members.
What is the difference between using 'super' and 'this'?
'super': Refers to the superclass | 'this': Refers to the current instance of the class.
What are the key differences between a superclass and a subclass?
Superclass: More general, provides base functionality | Subclass: More specific, extends or modifies superclass functionality.
What is the difference between abstract and concrete classes?
Abstract: Cannot be instantiated, may contain abstract methods | Concrete: Can be instantiated, provides implementations for all methods.
What is the difference between public and private access modifiers?
Public: Accessible from anywhere | Private: Accessible only within the class.
What is the difference between compile-time and runtime?
Compile-time: When the code is translated into machine code | Runtime: When the code is executed.
What is the difference between procedural and object-oriented programming?
Procedural: Code is organized into functions | Object-oriented: Code is organized into objects with data and methods.
What is the difference between a class and an object?
Class: Blueprint for creating objects | Object: Instance of a class.