> Most java code is valid Groovy code Up to Java 7 you could say "most" but why not "all"? Was it too difficult to test full compatibility? Why is the == sligh

> Most java code is valid Groovy code Up to Java 7 you could say "most" but why not "all"? Was it too difficult to test full compatibility? Why is the == slightly different between Java and Groovy, and the rest of the little differences which only confuse? And as for your example it doesn't look in the slightest like Java... P = "Hello world!" sub = P.substring(5) sub ==~ / wo.+/ ? println("World") : {}() Why wasn't Groovy updated so most java 8 code is also valid Groovy code? And why didn't you actually post some code to do something useful like "configure a transformation from XML -> CSV" instead of creating a HN login to post a meaningless syntax sample?