Question

In Chapter 8, you created a Salesperson class with fields for an ID number and sales values. Now, create an application that allows a user to enter values for an array of seven Salesperson objects. Offer the user the choice of displaying the objects in order by either (I)D number or (S)ales value.

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

Salesperson.java

public class Salesperson

{

   private int id;

   private double sales;

   Salesperson(int idNum, double amt)

   {

      id = idNum;

      sales = amt;

   }

   public int getId()

   {

      return id;

   }

   public double getSales()

   {

      return sales;

   }

   public void setId(int idNum)

   {

      id = idNum;

   }

   public void setSales(double amt)

   {

      sales = amt;

   }

}

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

SalespersonSort.Java

import java.util.*;

public class SalespersonSort

{

   public static void main(String[] args)

   {

      // your code here   

   }

    // sortByID()

    

    // sortBySales()

    

}

Answer 1

Code

Salesperson.java

public class Salesperson

{

   private int id;

   private double sales;

   Salesperson(int idNum, double amt)

   {

      id = idNum;

      sales = amt;

   }

   public int getId()

   {

      return id;

   }

   public double getSales()

   {

      return sales;

   }

   public void setId(int idNum)

   {

      id = idNum;

   }

   public void setSales(double amt)

   {

      sales = amt;

   }

}

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

SalespersonSort.java

import java.util.*;
public class SalespersonSort {

   public static void main(String[] args) {
       Salesperson salesPrsn[]=new Salesperson[7];
       Scanner scnr=new Scanner(System.in);
       int id;
       double sales;
       char choice;
       for(int i=0;i<salesPrsn.length;i++)
       {
           System.out.print("\nEnter Id for salesperson #"+(i+1)+": ");
           id=scnr.nextInt();
           System.out.print("Enter Sales for salesperson #"+(i+1)+": ");
           sales=scnr.nextDouble();
           salesPrsn[i]=new Salesperson(id, sales);
       }
       System.out.println("Display Salespersons ordered by (I)D number or (S)ales value");
       System.out.print("Your choice: ");
       choice=scnr.next().charAt(0);
       if(choice=='I' || choice=='i')
       {
           sortByID(salesPrsn);
       }
       else if(choice=='s' || choice=='S')
       {
           sortBySales(salesPrsn);
       }
       System.out.println("ID\tSales");
       for(int i=0;i<salesPrsn.length;i++)
       {
           System.out.println(salesPrsn[i].getId()+"\t"+salesPrsn[i].getSales());
       }
   }

   private static void sortBySales(Salesperson[] salesPrsn) {
       Salesperson temp;
       for(int i=0;i<salesPrsn.length-1;i++)
       {
           for(int j=i;j<salesPrsn.length;j++)
               if(salesPrsn[i].getSales()>salesPrsn[j].getSales())
               {
                   temp=salesPrsn[i];
                   salesPrsn[i]=salesPrsn[j];
                   salesPrsn[j]=temp;
               }
       }
   }

   private static void sortByID(Salesperson[] salesPrsn) {
       Salesperson temp;
       for(int i=0;i<salesPrsn.length-1;i++)
       {
           for(int j=i;j<salesPrsn.length;j++)
               if(salesPrsn[i].getId()>salesPrsn[j].getId())
               {
                   temp=salesPrsn[i];
                   salesPrsn[i]=salesPrsn[j];
                   salesPrsn[j]=temp;
               }
       }
      
   }

}

output

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