Raykor Technologies Java Developer Interview Questions, Process, and Tips

The purpose of OOP is to provide a structured and modular approach to software development.

• OOP allows for the organization of code into reusable objects.

• It promotes code reusability, maintainability, and scalability.

• Encapsulation, inheritance, and polymorphism are key concepts in OOP.

• Example: Creating a class 'Car' with properties and methods to represent a car object.

Object-oriented programming concepts in Java

• Encapsulation: bundling data and methods together

• Inheritance: creating new classes from existing ones

• Polymorphism: using a single interface to represent multiple forms

• Abstraction: hiding complex implementation details

• Encapsulation: grouping related data and methods together

Method overloading is when multiple methods have the same name but different parameters. Method overriding is when a subclass provides a different implementation of a method that is already defined in its superclass.

• Method overloading is achieved by having methods with the same name but different parameters.

• Method overriding is achieved by having a subclass provide a different implementation of a method that is already...read more

Java doesn't support multiple inheritance to avoid diamond problem and complexity.

• Java supports multiple interface inheritance

• Diamond problem occurs when two superclasses have a common method

• C++ supports multiple inheritance but requires virtual inheritance to avoid diamond problem

• Composition and delegation can be used instead of multiple inheritance