Clean your codebase with basic information theory(taylor.town)

  public class HelloWorld {
    public static void main(String[] args) {
      // Prints "Hello, World" in the terminal window.
      System.out.println("Hello, World");
    }
  }

  System.out.println("Hello, World");
  // Success

  println("Hello, World");

  java.lang.System - The System class contains several useful
  class fields and methods. It cannot be instantiated.
  |
  |       System.out : java.io.PrintStream - The "standard" output stream.
  |       | 
  |       |    PrintStream::println(String) -> void - Prints a String and then terminate the line.
  v       v    v   
  System.out.println("Hello, World");

  HelloWorld (public, class)
    main(String[] args) -> void (public, static, entry point)
    -- Prints "Hello, World" in the terminal window.

  HelloWorld::main() - entry point
    Program end, return code 0 [default]

  HelloWorld::main() - entry point
    System.out.println("Hello, World")
      -> failed if System.out.checkError() == true
    Program end, return code 0 [default]

  HelloWorld
    java.lang.System
    [java.io.PrintStream]