Java “?” Operator for checking null - What is it? (Not Ternary!)

Question

I was reading an article linked from a slashdot story, and came across this little tidbit:

Take the latest version of Java, which tries to make null-poi

Answer 1

That's actually Groovy's safe-dereference operator. You can't use it in pure Java (sadly), so that post is simply wrong (or more likely slightly misleading, if it's claiming Groovy to be the "latest version of Java").