Everything from the /* ... to .... */ is a comment
A comment is ignored by the computer when compiling or running the program
A comment is a note to people looking at the program to explain or remember information.
Every program should have a note telling who wrote it, when, and what it's about.

Every Java program is part of a class.
This class is called OldHelloWorld
public classes are ready to run

public static void main(String[] args) is the standard starting method for every Java program
public = it is open and you can run it
static = you do not have to create an object to run it, it can just run as it is
void = no information comes out of this method, when it's done, it's done
main = the standard main program method name to start a Java program
(String[] args) = a place where you can send information into the program before it runs

{ } curly brackets define the beginning and ending of a section of code

System.out.println means display information from the System out to the screen
"Hello world" is in quotes because it is a literal String
Literal strings are words or sentences that are treated like one solid piece