Question: i created a java application which has productId(pid), productName(Pname), quantity of products, Price. which uses Arrays concept and allows the user to set the array

i created a java application which has productId(pid), productName(Pname), quantity of products, Price. which uses Arrays concept and allows the user to set the array and print values. where i can print AddProducts, ViewAllProducts, ViewProduct, UpdateProduct, DeleteProduct, BuyProduct. I am having problem with BuyProduct(Its function is to which product i want to buy, how many products i want to buy, Once we purchase quantity should be reduced)

pid pname qty price

100 tv 10 2500

101 ac. 25. 3500

102 fridge 12. 2500

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