Comments

Part of the Fundamentals section of Coddy's Java journey. Lesson 3 of 73.

Comments are notes you write inside your code. The compiler completely ignores them - they exist only to help humans understand the code.

To write a single-line comment, use //. Everything after // until the end of the line is ignored:

// This is a comment
System.out.println("Hello, Coddy!");

A comment can also be written at the end of a line, after the code:

System.out.println("Hello, Coddy!"); // This prints Hello, Coddy!

For comments that span several lines, use /* to start and */ to end:

/* This is a multi-line comment.
   The compiler ignores all of it. */
System.out.println("Welcome!");

Comments can also temporarily disable a line of code without deleting it:

// System.out.println("This line will NOT run");
System.out.println("This line will run");

Note: Every multi-line comment that starts with /* must be closed with */, otherwise the compiler treats everything after it as a comment.

Challenge

Beginner

Fix the code so that only Hello, Java! is printed.

Add // at the start of the line that prints Goodbye!
The line printing Goodbye! should become a comment so it does NOT run
Do not delete any line, and do not change the line that prints Hello, Java!

Try it yourself

public class Main {
    public static void main(String[] args) {
        // Type your code below
        // Turn the line below into a comment so it stops running
        System.out.println("Goodbye!");
        System.out.println("Hello, Java!");
    }
}