Object variable problem

Question

Hi,
I have created a shop game, which has a BankAccount class, Customer class and Shop class. When the program starts the Customer objects are passed to the Shop class and they buy objects depending on what they want (randomly generated) the numBread, numMilk etc (number in stock) decrements every time the customer buys an item so the object variables are being decremented there, but later when the user has the option to order more stock, it won't update them!
for example,
I get the user input using:
orderAmount = scan.nextInt();
this.numBread = this.numBread + orderAmount;but it doesn't update the value in numBread, where as it does when the customer buys bread, and has the following:
this.numBread = this.numBread - 1;What are the reasons for this?

Answer 1

The above sentence was the most useful.If by chance you intended that to be a sarcastic remark, I urge you to reconsider your approach. Most people around here don't respond well to people who ask for help and then snap back with a snide comment.
there was too much code to copy and paste into hereThat's why I directed you to the SSCCE reference. We don't need to see all the code. We just need to see a compileable example of what it is you're actually doing. Everything else that is unrelated to the problem is unnecessary. However, you didn't provide enough detail to tell you specifically where you're messing things up.
and my question was general. General enough that it was impractical or impossible to answer in any specific manner. If you don't want general answers, don't ask general questions.
I wanted to make sure there wasn't some kind of java rule that won't allow an object variable to be changed in a certain situation.There is, but it doesn't apply in your situation. If you're curious about it, you can look up the final modifier.
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