I keep getting this message in BlueJ/Java.
http://cache.gyazo.com/19c325e77bbc120892d1035dcfda5377.png
I know there are several other questions like this already on StackOverflow, but none of the answers were specific enough for me, a Java noob. For example, one of them said to add something on the javac command line," and I have no idea what is that. So use that information to know how specific you must be with me. Sorry. Thanks!