Why every code that has to be executed in java is written inside a class?

Answer 1

please check google before posting new question, it will be helpful to community
https://stackoverflow.com/questions/4364327/why-all-the-java-code-is-packed-in-classes

Answer 2

Because java is a OOP.
OOP: Object Oriented Programming

Every language has its own way and syntax. Java is so because java developers made it so.

Answer 3

Every programming language has its own rules and that is something we have to find out and accept as they are.