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.
Synchronized is not a return type, it is a modifier saying that a Thread calling this method obtains a lock, causing all other Threads trying to access that object's synchronized methods to wait until the current thread is done. Do a search on "synchronized" for more information, or read any Java book you have available to you. Jason