Question

I'm confused about using multiple classes and using variables across them. Basically, I'm making a shopping cart with 3 classes: a driver, a cart, and a grocery item class. The code can be found here:
http://www.cs.montana.edu/~sean.yaw/Teaching/Fall2014/111/Inlabs/Inlab3/Inlab3

Answer 1

Question 1: Why can't I do a method to add a general item, instead of a specific "item1/2/3"?
Question 2: I want to print the variable name, quantity, and number in the same line, but how how do I reference that information from the other class?

Answer 2

Take a look at the class/static variables here:

http://www.tutorialspoint.com/java/java_variable_types.htm

So you can use gettrs and setters to return and return and modify a variable in an instance or the entire class. If the variable is a static one for the entire class then it is the same one in every object made from that class.

The nuber of bicycles here is an example of this:
http://docs.oracle.com/javase/tutorial/java/javaOO/classvars.html

Let me know how much those help, if they don't, what you don't get, etc. We can go from there.

Answer 3

Wow I didn't know about that java tutorial site. It's exceptionally useful. Thank you!!!!

Answer 4

Yah, it is a reasonably good site.