Question

The establishment called ABC Enterprise requires a Java program to keep a database of the inventory of the products that it sells. Each product is identified by its manufacturer, its name, the quantity, and unit price. Note: a manufacturer is characterized by its company’s name and address In addition to storing the information, the program should be able to make updates to the quantity and/or the price as time goes on. That is, when a sale is made, the quantity of that product must be reduced; similarly, when a product is re-ordered, the quantity of that product must be increased. Also, when there is a change in the price of a product, the price must be changed. The change must be interpreted as a replacement of the value. New products may be added to the inventory at any time; also, a product may be removed from the inventory at any time. Maintain a separate list the products that have been deleted from the database of active products.

Your program must be able to produce three kinds of reports, namely:

(a) Locate a single product and display its name, price and quantity alone.

(b) The inventory report should be structured as follows:

Product PurchaseDate Quantity Price Manufacturer State

Telephone 01/20/2013 10 254.99 Motorola FL

Computer 01/06/2013 15 756.99 CBS NY

: : : : : :

: : : : : :

(c) A list of the deleted products should be structured as follows:.

Product Date Manufacturer

Paper reams 01/20/2013 Morgan Jewelry

: : :

In your design, convince yourself that you need a minimum of four classes, not including the test class – Product, Manufacturer, Address, and Database. You may use the class called GetData.java, Listing 1.6 (in the textbook) , for inputting the data. Use a scrollable panes to display your output.

Answer 1

// GetData.java

import javax.swing.JOptionPane;

public class GetData

{

public static double getDouble(String s)

{

return Double.parseDouble(getWord(s));

}

public static int getInt(String s)

{

return Integer.parseInt(getWord(s));

}

public static String getWord(String s)

{

return JOptionPane.showInputDialog(s);

}

public static String getString(String s)

{

return JOptionPane.showInputDialog(s);

}

}

// Address.java

public class Address

{

private String street, city, state, zip;

public Address(String str, String city, String st, String zip)

{

street = str;

this.city = city;

state = st;

this.zip = zip;

}

public String getStreet()

{

return street;

}

public String getCity()

{

return city;

}

public String getState()

{

return state;

}

public String getZip()

{

return zip;

}

}

// Manufacturer.java

public class Manufacturer

{

private String companyName;

private Address companyAddress;

public Manufacturer()

{

this.companyName = "";

this.companyAddress = null;

}

public Manufacturer(String compName, Address address)

{

this.companyName = compName;

this.companyAddress = address;

}

public String getCompanyName()

{

return companyName;

}

public void setCompanyName(String companyName)

{

this.companyName = companyName;

}

public Address getCompanyAddress()

{

return companyAddress;

}

public void setCompanyAddress(Address address)

{

this.companyAddress = address;

}

}

// Product.java

import java.text.SimpleDateFormat;

import java.util.Date;

public class Product

{

SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");

Manufacturer manufacture;

String productName;

int quantity;

double unitPrice;

Date productCreated;

public Product()

{

this.productName = "";

this.quantity = 0;

this.unitPrice = 0.0;

this.productCreated = null;

this.manufacture = null;

}

public Product(String prodName, int quantity, double unitPrice,

Date productCreated, Manufacturer manufact)

{

this.productName = prodName;

this.quantity = quantity;

this.unitPrice = unitPrice;

this.productCreated = productCreated;

this.manufacture = manufact;

}

public Date getProductCreated()

{

return productCreated;

}

public void setProductCreated(Date productCreated)

{

this.productCreated = productCreated;

}

// to get the Manufacturer object

public Manufacturer getManufacture()

{

return manufacture;

}

// to set the Manufacturer object

public void setManufacture(Manufacturer manufacture)

{

this.manufacture = manufacture;

}

// to get the name of the product

public String getProductName()

{

return productName;

}

// to set the name of the product

public void setProductName(String prodName)

{

this.productName = prodName;

}

// to get the quantity of the product

public int getQuantity()

{

return quantity;

}

// to set the quantity of the product

public void setQuantity(int quantity)

{

this.quantity = quantity;

}

// to get the unit price of the product

public double getUnitPrice()

{

return unitPrice;

}

// to set the unit price of product

public void setUnitPrice(double unitPrice)

{

this.unitPrice = unitPrice;

}

// to update the quantity of the product

public void upDateQuantity(int quantity_upDate)

{

quantity += quantity_upDate;

}

// to update the price of the product

public void upDatePrice(double price_upDate)

{

this.unitPrice = price_upDate;

}

public String getProductInfomation()

{

String result = "";

result += String.format("%-30s", productName);

String dateForm = sdf.format(productCreated);

result += String.format("\t %s", dateForm);

result += String.format("%10d", quantity);

result += String.format("\t%15.2f", unitPrice);

result += String.format("\t%15s",

manufacture.getCompanyName());

result += String.format("\t%20s",

manufacture.getCompanyAddress().getState());

return result;

}

}

Step-by-step explanation:

• Create a manufacturer class to store and get information about company name and company address.
• Create a product class to hold the manufacturer object, product name and other relevant information.