Create "Hello World" using Java on Codenvy [closed]

Question

Before you read, understand I'm clearly a noob (Actually, I don't even know anything about programming yet). I wanted to start learning-practicing with Java using an online IDE. In this case, I'm using Codenvy (www.codenvy.com). It's clearly beautiful and awesome, but I have a question. In Eclipse or DrJava or whatever (simple IDEs), to make "Hello World", you need to do this...

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

As said on websites like this: https://www.learnjavaonline.org/en/Hello,_World!

On Codenvy, it looks to be "harder" (obviously, it's easy when you know, but harder in the meaning that there're more things to do). On samples of Hello World, I see folders, packages, .xml and external libraries. Can somebody tell me how to do (step by step if possible, without ignoring anything, I'm a noob after all) "Hello World" on Codenvy? And explain me why it's different from Eclipse, for example. Please, don't say "Go to Eclipse, you're drunk". I want to understand Codenvy, I think I will learn from understanding Codenvy. Thanks you.

Answer 1

Codenvy uses Maven and Ant as default build managers. Your app has to be packaged as JAR and this JAR is then executed. Thus, you need to have pom.xml or build.xml file in your project.

The best way for you to get started is to create a sample app from the project wizard - Maven Console.

It's a bit different from Eclipse where all you need is your class and Java installed.

Answer 2

This is tutorial for simple Java "Hello World":

http://www.smlcodes.com/tutorials/codenvy-java-onepage-tutorial

At step 4 I had to make googling this tutorial.