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.
Well, because that's not the syntax that the creators of the Java language chose to use. The instanceof keyword must be followed by the name of a reference type. That's it. No parentheses are required or allowed.