Write a program(In java) that lets the user enter four quarterly sales figures f

Question

Write a program(In java) that lets the user enter four quarterly sales figures for six divisions of a company. The figures should be stored in a two-dimensional array. Once the figures are entered, the program should display the following data for each quarter:

- A list of the sales figures by division
- each division's increase or decease from the previous quarter (This will not be displayed for the first quarter)
- The total sales for the quarter
- The company's increase or decrease from the previous quarter (This will not be displayed for the first quarter)
- the average sales for all divisions that quarter
- the division with the highest sales for that quarter



Also we have to enter the missing code from the Divisions class and SaleStatics Class as below:
public class Divisions
{
private final int DIVISIONS = 6; // Number of divisions
private final int QUARTERS = 4; // Number of quarters

// Create an array to hold company-wide sales data.
private double[][] sales = new double[DIVISIONS][QUARTERS];

/**
* setSales method
* This method sets a division's amount of sales for a
* specified quarter.
*/

public void setSales(int div, int quarter, double amount)
{
/* Missing code starts here */

/* Missing code ends here */
}

/**
* getSales method
* This method returns a division's sales for a specified
* quarter.
*/

public double getSales(int div, int quarter)
{
// The array subscripts are zero-based, so subtract 1
// from div and quarter to get the correct subscript.
return sales[div - 1][quarter - 1];
}

/**
* totalQuarterSales method
* Returns the total sales for the specified quarter.
*/

public double totalQuarterSales(int quarter)
{
/* Missing code starts here */

/* Missing code ends here */
}

/**
* getQuarterlyIncrease method
* Returns the quarterly increase for a specified
* quarter, for a specified division. If the quarter
* is 1, or if an invalid value is passed for the
* quarter or the division, the method returns 0.0.
*/

public double getQuarterlyIncrease(int div, int qtr)
{
/* Missing code starts here */

/* Missing code ends here */
}
}


AND


import java.io.*;
import java.util.Scanner;
import java.text.DecimalFormat;

public class SalesStats
{
public static void main(String[] args) throws IOException
{
// Create a Divisions object.
Divisions d = new Divisions();

// Read the values from the file into d.
readValues(d);

// Display the values in d.
displaySales(d);

// Display the quarterly increase or decrease.
displayQtrDifference(d);

// Display the total sales by quarter.
displaySalesByQtr(d);

// Display the quarterly increase or decrease
// by quarter.
displayCompanyQtrDifference(d);

// Display the average sales per quarter.
displayAverageSalesPerQtr(d);

// Display the division with the highest sales
// by quarter.
displayHighestDivisionPerQtr(d);
}

/**
* readValues method.
* Reads the values from Sales.txt into the object.
*/

public static void readValues(Divisions d) throws IOException
{
/* Missing code starts here */

/* Missing code ends here */
}

/**
* displayValues method.
* Displays a list of sales figures by division.
*/

public static void displaySales(Divisions d)
{
System.out.println("SALES AMOUNTS BY DIVISION");
System.out.println("=========================");
/* Missing code starts here */

/* Missing code ends here */
}

/**
* displayQtrDifference method.
* Displays the quareterly increase or decrease for each
* division, starting at quarter 2.
*/

public static void displayQtrDifference(Divisions d)
{
System.out.println("QUARTERLY INCREASE/DECREASE BY DIVISION");
System.out.println("=======================================");
/* Missing code starts here */

/* Missing code ends here */
}

/**
* displaySalesByQtr method.
* Displays total sales by quarter.
*/

public static void displaySalesByQtr(Divisions d)
{
DecimalFormat dollar = new DecimalFormat("#,##0.00");

System.out.println("SALES AMOUNTS BY QUARTER");
System.out.println("========================");
for (int qtr = 1; qtr <= 4; qtr++)
{
System.out.println("Quarter " + qtr + ": $" +
dollar.format(d.totalQuarterSales(qtr)));
}
System.out.println();
}

/**
* displayCompanyQtrDifference method.
* Displays the quareterly increase or decrease for the
* company, starting at quarter 2.
*/

public static void displayCompanyQtrDifference(Divisions d)
{
double increase;

DecimalFormat dollar = new DecimalFormat("#,##0.00");

System.out.println("QUARTERLY INCREASE/DECREASE FOR THE COMPANY");
System.out.println("===========================================");
/* Missing code starts here */

/* Missing code ends here */
}

/**
* displayAverageSalesPerQuarter method.
* Displays the average sales for all divisions per quarter.
*/

public static void displayAverageSalesPerQtr(Divisions d)
{
/* Missing code starts here */

/* Missing code ends here */
}

/**
* displayHighestDivisionPerQtr method.
* Displays the division with the highest sales per quarter.
*/

public static void displayHighestDivisionPerQtr(Divisions d)
{
System.out.println("DIVISION WITH THE HIGHEST SALES PER QUARTER");
System.out.println("===========================================");

/* Missing code starts here */

/* Missing code ends here */
}
}

Explanation / Answer

import java.util.Scanner;

public class Main
{
public static void main(String[] args)
    { Scanner in = new Scanner(System.in);
      double[][]sales=new double[6][4];
        int i,j;
        getsales(sales);
        printsales(sales);
        quarterchange(sales);
        totalaveragesales(sales);
       highest(sales);
    }
public static void getsales(double sales[][])
{int i,j;
Scanner in=new Scanner(System.in);
System.out.println("Enter Sales");
for(i=0;i<6;i++)
{System.out.println("For Division "+(i+1)+": ");
     for(j=0;j<4;j++)
        {System.out.print("For quarter "+(j+1)+": ");
        sales[i][j]=in.nextDouble();
        while(sales[i][j]<0)
             {System.out.println("must be>=0");
               System.out.print("For quarter "+(j+1)+": ");
              sales[i][j]=in.nextDouble();
            }
        }
    }
   
}
public static void quarterchange(double sales[][])
{int i,j;
double quarter[ ]={0,0,0};
System.out.print("Increase from last quarter quarter div ");
for(i=1;i<4;i++)
    System.out.print((i+1)+" ");
System.out.println();
for(i=0;i<6;i++)
   {System.out.print(i+1);
    for(j=1;j<4;j++)
        {System.out.print(" "+(sales[i][j]-sales[i][j-1]));
        quarter[j-1]+=(sales[i][j]-sales[i][j-1]);
        }
    System.out.println();
    }
System.out.println("Company Increase from last quarter");
for(i=0;i<3;i++)
System.out.println("quarter "+(i)+" to "+(i+1)+": "+quarter[i]);
System.out.println(" ");
   
System.out.println();
}


public static void totalaveragesales(double sales[][])
{int i,j;
double sum;
System.out.println("Total Sales Average Sales");
for(i=0;i<4;i++)
{sum=0;
   for(j=0;j<6;j++)
       sum+=sales[j][i];   
    System.out.println("For Quarter "+(i+1)+": "+sum+" "+sum/6.);       
    }
System.out.println(" ");
}
public static void printsales(double sales[][])
{int i,j;
System.out.print("SALES BY DIVISION quarter div ");
for(i=0;i<4;i++)
    System.out.print((i+1)+" ");
System.out.println();
for(i=0;i<6;i++)
   {System.out.print(i+1);
    for(j=0;j<4;j++)
        System.out.print(" "+sales[i][j]);
    System.out.println();
    }
System.out.println();
}



public static void highest(double sales[][])
{int i,j,div=0;
double max=0;
System.out.println("Division with highest sales");
for(i=0;i<4;i++)
{max=0;
div=0;
   for(j=0;j<6;j++)
    if(sales[j][i]>max)
       {max=sales[j][i];
        div=j+1;
        }
    System.out.println("For Quarter "+(i+1)+" division with highest sales is: "+div);       
    }
System.out.println(" ");

}

   
}

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