This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
What you have to watch out for is that the | has a special meaning in a regex, so you need to escape it. Furthermore, the \ has a special meaning in java, so you have to escape it. So what you should get is this: