Atelier Download

To check if you already have Java installed, and if so what version, enter this command in an OS Terminal: java –version
To install Java for the first time, a newer version of Java, or a different bitness of Java (Java bitness should match the Eclipse bitness) check the Oracle website: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

Go to the Eclipse Photon download page at the Eclipse website: https://www.eclipse.org/downloads/packages/release/photon/r.
On this page, select the Eclipse Installer for the package you want to install. We suggest you get Eclipse IDE for JavaScript and Web Developers which includes essential tools for JavaScript, HTML, CSS and XML languages support. You can always add or remove plugins later.
On the download page for the selected package, select the link for your OS from the list of Download Links to the right of the Package Description:

Launch Eclipse
Accept the default workspace location, or enter a new directory (this is where your Atelier projects/local copies of server files will be stored)
You have two options to install the Atelier plugin
1. Install stable releases of the Atelier plugin from the Eclipse Marketplace
  1. Select Help > Eclipse Marketplace
  2. Find Atelier and click Install
2. Add one of the Atelier repositories to your Eclipse environment
  1. Select Help > Install New Software
  2. Click Add... and enter the following info:
    1. Name: Something meaningful to you, probably Atelier Stable or Atelier Beta
    2. Location: URL for the repository - pick stable for the fully tested version, or beta for the latest-and-greatest which goes through standard testing by developers but might still have issues
      1. Stable: https://atelier.artifactoryonline.com/atelier/updates/stable/1.3/
      2. Beta: https://atelier.artifactoryonline.com/atelier/updates/beta/latest/
  3. Click OK, select the box next to Core (containing the Atelier IDE), and click through to install
You will be prompted to restart Eclipse once the install is done
To open the Atelier perspective which contains the Atelier-specific views: click Open Perspective, highlight Atelier and click Open

You can update your Eclipse plugins manually or by setting up automatic updates

Automatic updates: (Windows) Select Window > Preferences or (Mac) Eclipse > Preferences, drop down Install/Update, select Automatic Updates and pick your preferences
Manually, option 1: Select Help > Check for Updates
Manually, option 2: (Windows) Select Help > About Eclipse or (Mac) Eclipse > About Eclipse, click Installation Details, then update