Question

Console Welcome to the Customer Viewer Enter a customer number: 1003 Ronda Chavan 518 Commanche Dr. Greensboro, NC 27410 Display another customer? (y/n): Y Enter a customer number: 2439 There is no customer number 2439 in our records. Display another customer? (y/n): n Operation The application prompts the user to enter a customer number. If a customer with that number exists, the application displays the customer's name and address. If not, the application displays an appropriate message that includes the customer number. Specifications • Create a class named Customer that has instance variables that store the name, address, city, state, and postalCode for the customer. This class should have get and set methods that provide access to all instance variables. In addition, the class should have a method named getNameAndAddress that returns the name and address formatted as shown above. • Create a class named CustomerDB class that contains a static method named getCustomer that accepts a customer number (an int value) and returns a Customer object. Within this class, code an if statement that returns this data: 1001 Barbara White 3400 Richmond Parkway #3423 Bristol, CT 06010 1002 Karl Vang 327 Franklin Street Edina, MN 55435 1003 Ronda Chavan 518 Commanche Dr. Greensboro, NC 27410

Complete Project 4-1 as outlined above. There are no starter files for this project. You will make it from scratch. You should end up with 5 files in your package (.settings, bin, src, .classpath, and .project)

Answer 1

/*Java test program that prompts user to enter customer
* number.If found then display the Customer record
* otherwise display that the record is not found.*/
//CustomerConsole.java
import java.util.Scanner;
public class CustomerConsole
{
   public static void main(String[] args)
   {
       int customerNumber;
       //Create a Scanner class object
       Scanner console=new Scanner(System.in);
      
       System.out.println("Welcome to the Customer Viewer");
       System.out.println();
       String choice="y";
       /*repeat until user enter n to close*/
       while(!choice.equals("n"))
       {
           System.out.print("Enter a customer number: ");
           customerNumber=Integer.parseInt(console.nextLine());
           Customer cutomer=CustomerDB.getCustomer(customerNumber);
           if(cutomer!=null)
           {
               System.out.println();
               System.out.println(cutomer.getNameAndAddress());
           }
           else
           {
               System.out.println("There is no customer number "+customerNumber
                       +" in our records.");
           }
           System.out.println();
           System.out.print("Display another customer? (y/n): ");
           choice=console.nextLine();  
           System.out.println();
       }//end of while loop
      
   } //end of the main method
} //end of the class,CustomerConsole
------------------------------------------------------------------------------------------------------------

//Customer.java
public class Customer
{
   //private instance variables
   private String name;
   private String address;
   private String city;
   private String state;
   private int postalCode;
   /*Constructor */
   public Customer(String name, String address, String city, String state, int postalCode) {
       this.name = name;
       this.address = address;
       this.city = city;
       this.state = state;
       this.postalCode = postalCode;
   }

   public String getName()
   {
       return name;
   }

   public void setName(String name)
   {
       this.name = name;
   }

   public String getAddress()
   {
       return address;
   }

   public void setAddress(String address)
   {
       this.address = address;
   }

   public String getCity()
   {
       return city;
   }

   public void setCity(String city)
   {
       this.city = city;
   }

   public String getState()
   {
       return state;
   }

   public void setState(String state)
   {
       this.state = state;
   }

   public int getPostalCode()
   {
       return postalCode;
   }

   public void setPostalCode(int postalCode)
   {
       this.postalCode = postalCode;
   }
   /*Method that returns name and address
   * of the customer*/
   public String getNameAndAddress()
   {
       return name+"\n"
                   +address+"\n"
                   +city+", "+state+" "+postalCode;
   }
} //end of the Customer class

------------------------------------------------------------------------------------------------------------

//CustomerDB.java
public class CustomerDB
{
   /*Static method that takes customer number
   * and then search for customer number using
   * if else statement and then return the
   * create customer object if matched otherwise
   * return null*/
   public static Customer getCustomer(int cusNumber)
   {
       if(cusNumber==1001)
       {
           return new Customer("Barbara White",
                   "3400 Richmond Parkway #3423",
                   "Bristol", "CT", 06010);
       }
       else if(cusNumber==1002)
       {
           return new Customer("Karl Vang",
                   "327 Frangklin Street",
                   "Edina", "MN", 55435);
       }
       else if(cusNumber==1003)
       {
           return new Customer("Ronda Chavan",
                   "518 Commanche Dr.",
                   "Greensboro", "NC", 27410);
       }      
       //returns null if customer number is not found
       return null;
   }//end of the method ,getCustomer
}

------------------------------------------Sample Run#---------------------------------------------------

Welcome to the Customer Viewer Enter a customer number: 1003 Ronda Chavan 518 Commanche Dr. Greensboro, NC 27410 Display another customer? (y/n): y Enter a customer number: 2439 There is no customer number 2439 in our records. Display another customer? [y/n): n