*Java OOP Concepts – Interview Q&A* ☕🧠 *1. What is a Class in Java?* A *class* is a blueprint for creating objects. It defines variables and methods. Example: ```java class Car { String color; void ...
The abstract keyword is a non-access modifier, used for classes and methods: Abstract class: is a restricted class that cannot be used to create objects (to access it, it must be inherited from ...
Project Description -This project demonstrates inheritance, abstraction, and polymorphism in Java through a phone call billing system: -PhoneCall is an abstract superclass representing any phone call.
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