Groovy and Groovy++

Groovy is a popular and successful dynamic scripting language for the JVM. It has extended the Java platform in many exciting ways and brought powerful language features and frameworks to Java developers while remaining very close to Java at syntax and semantic levels. Groovy’s powerful language features combined with its ease of use can soon become an addiction, and once you are addicted to it, going back and writing Java code can be a difficult thing to do.

via Language of the Month: Groovy++, How Java and Groovy Can Be Better | Dr Dobb’s.