Companies are looking for developers that understand the why and how of creating a scalable and reliable program, not just someone who can code.
Interviewers use OOP principles to evaluate your coding logic, architectural thinking, and problem-solving skills since key concepts like encapsulation, inheritance, polymorphism, and abstraction are important in the actual world of Java applications.
Given the consistently increasing demand for Java developers in fields including software development, financial systems, enterprise applications, and mobile applications, it is unlikely that Java will go away very soon.
In Java, what is object-oriented programming?
Real-world items called "objects" that possess some form of state (or data) and behavior (or method) are the foundation of the programming paradigm known as object-oriented programming, or OOP.
Java is by far the most OOP-centric language available since everything is handled as an object in Java, with the exception of primitive types.
One advantage of OOP is that it makes it possible for programmers to create modular, reusable, and maintainable applications.
Developers program apps as collections of objects that interact with one another like machine components rather than writing a lot of code.
Java OOP is based on four main principles, which are
Encapsulation: It reveals what must be revealed while concealing internal information.
Reusing code through hierarchy is known as inheritance.
Writing flexible code that can function with a variety of objects is known as polymorphism.
Abstraction: By focusing on the essentials, it simplifies complicated logic.
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