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.
It is optional for a class that implements the Collection interface to allow objects to be the removed. If it doesn't want to allow objects to be removed, then it's implementation of the remove method should just throw an UnsupportedOperationException. Obviously the object that Arrays.asList returns has chosen to do this. [ April 24, 2008: Message edited by: Joanne Neal ]