Hi,
Well, yes. The literals are gone now. But the code is different too. 
We do, but it’s not fulsome. In fact, I looked this up yesterday before I answered you but didn’t link to it because a) it’s a bit thin and b) I believe the last sentence in ‘Language-specific details’ (“Differences in indentation and in string literals are ignored while detecting duplications.”) applies to all languages, not just Java. (Yes, I’ve raised that internally.)
HTH,
Ann