This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
That regex is more complicated than it needs to be, Piet--or at least, more advanced. The OP didn't even mention needing to extract the word from within the apostrophes, but if you really need to, using capturing groups is simpler: