Java developers

I've been using Groovy. It's a pleasant scripting language that runs in a JVM, and has a Java-ish syntax. There are a number of differences to Java. One is it's relaxed attitude to typing, which I noticed when returning to something I wrote a while ago.

if ( someCondition ) {
    // do stuff...
} else if ( anotherCondition ) {
    // do other stuff...
} else {
    barf
}

WTF is barf? It looks like I was roughing out the code, and intending to come back to throw some exception if neither condition is true. In Java, the compiler would have complained about barf. But in the relaxed world of Groovy, the code works. After a little testing, I find that executing barf produces groovy.lang.MissingPropertyException: No such property: barf which is pretty much what I wanted!