
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Using Java

Transcribed Image Text:NOTE: The Array, ArrayList or List class may not be used
Write a program that will create an invoice for a customer order based on their requests. Your program
should prompt the user for their requested items based on a stock number then store the associated
information in an array to be displayed in the invoice.
1. Define a Java class as described below. All variables should be declared as private and all
methods as public. Save the class definition in a file with an appropriate filename.
Class Name: Inventory
Instance Variables: itemName - String
price - double
quantity - integer
Instance Methods: A default constructor
A constructor that accepts three arguments, one for each of the fields.
getter methods for each of the class fields.
toString() A method to display the fields of an instance of the class in to be displayed on the order
sheet.
Compile and debug the above code.
1. Then, create a class, TestInventory that contains a main() with static methods to create an
invoice using the above class. Save the class in a file with an appropriate file name.
• Declare four initialized arrays, one for the Stock Number, and three associated arrays for the Item
Name, Price and Quantity. Initialize the Item Name array with your own String values:

Transcribed Image Text:Stock Number Item Name Price Quantity
0372
1596
2117
4580
8529
$2.79 68
13.50 12
7.52 29
30.42 40
16.58 6
• Create a method that will prompt the user for the number of items the user wishes to order
and create an order array that will store instances of the Inventory class.
• Using the arrays, create a static method that will populate the above array with the items
ordered by the user. This method should:
-prompt user for the requested stock number and quantity of items to purchase;
-using a loop, search the Stock Number and Quantity arrays for a valid order
(Your program should handle invalid stock numbers and quantities entries and prompt the user for
a new entry.)
- update the Quantity array to reflect the decreased available amount
extract the corresponding item name and price;
-instantiate an instance of the Inventory object and insert it into the order array.
• Call a static method to create an order invoice displaying the contents of the order array using
the toString instance method. The invoice should also display the extended price of the items
along with a final total
The Array, List or ArrayList class may not be used
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