The Groovy IDE and editor integration
If you are going to do any amount of serious Groovy coding, you will want to work with Groovy in your favorite IDE.
NetBeans
Of the popular IDE environments, NetBeans was the first to provide built-in Groovy support. From NetBeans 6.5 onwards, Groovy support is available from within any of the Java bundles without any additional plugins being required. By default, you have excellent Groovy source editing with syntax highlighting, source folding, and code completion. You can mix and match Groovy with Java in your projects, or build a full Groovy on Grails-based project from scratch. You can download the latest NetBeans installation from https://netbeans.org/downloads/.
Eclipse
Eclipse was the first Java IDE to have Groovy support integrated through the Groovy-Eclipse plugin. You can install the Groovy-Eclipse plugin from the update site at http://dist.springsource.org/snapshot/GRECLIPSE/e4.5/.
The Groovy-Eclipse plugin has full support for source-level Groovy...