Answer 1

A class is simply a template for creating an object. It has its own properties and methods, which can be extended through inheritance. Since Java relies heavily on OOP, classes are basically the lifeblood of any Java program. Put simply, separating your program into different classes makes it more readable and reusable. You can read up on Object-Oriented Programming and its pillars (Abstraction, Encapsulation, Inheritance & Polymorphism) here on SoloLearn's Java course to get a deeper understanding of how classes work in Java.