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.
No. That's not right. The only part of the collection which you can get by index is the classes who implement the List interface (Like ArrayList). The signature of the method is: get(int index)
And if you look at the java documentation for LinkedHashSet again, you'll see that you can not find such a method for Set and its implementers.