Custom Exception for incrementSales() or incrementCosts() methods

[ichervachidze]

Both methods throw illegal argument exception. Create a custom exception for either (or both) method(s).

Where to find

Iteration 3, Inventory package, class Shop

incrementSales() method:

public void incrementSales(double increment) {
	if (increment < 0) throw new IllegalArgumentException();
	else this.sales += increment;
	}

incrementCosts() method:

//Increments costs by given amount
public void incrementCosts(double increment) {
	if (increment < 0) throw new IllegalArgumentException();
	else this.costs += increment;
       }

What to do

Create a custom exception with a descriptive name, such as NegativeSalesException/NegativeCostsException.

[pmcder]

I will work on both of these. Do you want them in this same package ?