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.
Somewhere within your code, you're making a call to an instance method of a class - but you're doing that from within a static method so you're not calling that method on a specific instance. For example, you might be doing something like this:-
whereas what your main method needs to look like it this:-
or alternatively, it might be appropriate to make the printMessage method static. Hope this helps, Kathy [ June 26, 2002: Message edited by: Kathy Rogers ]