So i have ran uppon this issue on many servers, that whenever you draw your cash out the bank while having cash in your inventory the cash will disappear.
Well this is a simple and basic check. Do not judge me on the code as i only know the basics.

Please leave comments on how i can better this, helpful criticism is taken.

Class edited: itemAssistant
Difficulty: 1/10

Find method fromBank()

And declare

    

int amount = amountCheck;

Above amount > 0 add

    

if ((inInv + amountCheck) < 0) {

     amount = Integer.MAX_VALUE - inInv;

}

Find method bankItem()

and declare

    

int amount = amountCheck;

under

    i = GameSettings.BANK_SIZE + 1;

declare

    int playerInBank = c.bankItemsN[toBankSlot]; 

And under that add the following

    

if ((playerInBank + amountCheck) < 0) {

     amount = Integer.MAX_VALUE - playerInBank;

}

Also don't forget to declare the amountCheck in the header of the method