How would I go about logging on my paint how many items I have left in my bank?

If I'm running multiple accounts it's good to know which account is about to run out of a certain item in it's bank.

 

I've tried something like
 

int itemsLeft = getBank.contains(item);

g.drawString("Items left: " + itemsLeft);

 

but that shows me the amounts left only when I have the bank open. If it's not opened it doesn't show anything.

You would have to store the value in a variable when opening the bank. There is no way to tell without having it open.

you could just write to a file:

if the information is not there, go to bank, get info, dump it to file

this information will be persistent and can/should be updated each time you have the bank open

int amountInBank; 

if (getBank.isOpen) {

    amountInBank = getBank.getAmount(item);

} 

Now it will store the value

You're probably using the item in your script.
Just before u're about to close the bank put the item amount in a variable.

Ahh right, I see what I was doing wrong. Thanks guys.