Question: Hi I need help with this problem. If you can explain it well by leaving comment . Thanks a lot!! Problem 1: Exceptions Purchase +
Hi I need help with this problem. If you can explain it well by leaving comment . Thanks a lot!!

![+ purchaseltem(itemNumber : int): void +purchaseltems(itemNumbers: int[]): void returnltem(itemNumber: int): void +](https://s3.amazonaws.com/si.experts.images/answers/2024/09/66db0dadbcfe2_91766db0dad3269a.jpg)
![returnltems(itemNumbers int[]) void KeyboardPurchase - keyboards: int[] + KeyboardPurchase(keyboards: int[]) + purchaseltem(itemNumber:](https://s3.amazonaws.com/si.experts.images/answers/2024/09/66db0dae6f6bf_91866db0dae0343e.jpg)
Problem 1: Exceptions Purchase + purchaseltem(itemNumber : int): void +purchaseltems(itemNumbers: int[]): void returnltem(itemNumber: int): void + returnltems(itemNumbers int[]) void KeyboardPurchase - keyboards: int[] + KeyboardPurchase(keyboards: int[]) + purchaseltem(itemNumber: int): void +purchaseltems(itemNumbers: int[I): void returnltem(itemNumber : int): void + returnltems(itemNumbers :int): void + toString(): String
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