Create a vending machine menu in Java. Basic school project.

I need to create a vending machine menu, in Java, that has 7 items for sale. The machine has an initial stock of 10 items. Each item is different, has a different price. The stock must update with each sale. There is a "bank" of coins in the machine that needs to update after every sale. The machine has to accept only coin values (normal 5p, 10p, 20p, 50p, 1pound, 2 pounds) and issue the change given in coins. There is a power user option to be inserted via the keypad. This allows the user to check stock, profit and loss. It has to be done using simple methods of coding. Just basic Java commands. No fancy stuff. Must have basic comments explaining the logic behind the code. More info in the file attached. Regards and good coding.