This is helloworld spped test... so it shows nothing about speed other than mentioned in comments. For all that doesn't like my test: For me it shows how small applications can work and if they are smart enough to ignore dummy code :) I've figured it after reading comments. Summary: Java is slow, Scala works probably the same but starts longer. Groovy is slower. Groovy++ - maybe some day I will have time to test it. I read about Groovy and Scala, both languages are interesting. Groovy is easier and have much better support, it is like heaven and hell when you compare Scala and Groovy support (Intelli IDEA is only one that works for me... but I think that when I install in Eclipse Groovy plugin it breakes Scala support, Groovy and Scala are fighting in my computer and when one works second breaks, but it is only for me). I like Groovy but i read about how slow it is, lets write veeery simple test and check it: Scala: object Sample{ def main(args: Arr...