# Installation

## Prerequisites

Java

- Download and install a JVM (JRE or JDK), if one is not already installed.
  - for ATL 2.0 or older, JDK 1.4 will work.
  - for ATL 3.0+, you need JDK 5.0 or later

Eclipse

- Download and install Eclipse.

EMF

- Install EMF.

## Install ATL

There are two ways to install ATL:

- via update site
- via zip: see ATL Downloads. Once your zip is downloaded, just unpack it into
  - with Eclipse 3.3, 3.2: ~/eclipse/features/ and ~/eclipse/plugins/ folders
  - with Eclipse 3.4+: ~/eclipse/dropins/ folder

Finally, restart Eclipse.

The ATL SDK build enables to:

- consult documentation offline
- access ATL examples
- access the source code of installed ATL plugins

To install ATL from CVS, please refer to the Developer Guide.

= See Also =
* Introduction
* Overview of the Atlas Transformation Language
* The ATL Language
* The ATL Tools