You must write your code inside the Main method. Top-level programs, a new concept introduced in C# 9.0, allow you to write code for simple programs sans the need to write boilerplate code.

How to Write a Simple Program in Netbeans. The Java programming language is deployed on a variety of computing platforms that application development businesses can leverage for sales.

A new technology called Codex generates programs in 12 coding languages and even translates between them. But it is not a threat to professional programmers.