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.
Don't sweat it. I'm being short because I'm at work You write just like you read:
The classes Room and Player must implement the java.io.Serializable interface (there's no methods, just declare them) so the output stream knows they can be written out. The Java Tutorial has a chapter on Input and Output if you want to know more. [ March 24, 2006: Message edited by: Joe Ess ]