Write a RainFall class that stores the total rainfall for each of 12 months of a

Question

Write a RainFall class that stores the total rainfall for each of 12 months of a year into an array of doubles.

The RainFall class constructor method accepts an array of double values representing the amount of rainfall in inches per month.

The program should have 4 methods that return the following:

1) Total rainfall for the year

2) Average monthly rainfall

3) Month with the most rain

4) Month with the least rain

Other requirements that must be met!

FIELDS : monthNames : private java.lang.String[] monthNames

Values : private double[] values

Constructors : RainFall () : public RainFall(double[])

Methods :

getAverage(); public double

getLowestMonth() ; public (This is a String not the value of the month. Month name to be returned)

getHighestMonth ; public (This is a String not the value of the month. Month name to be returned)

getTotal ; public double

Use a String Array with an array initializer list to store the month :

names private String[] monthNames= {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

OUTPUT:

UNIT TESTING

double[] d1 = {1.1,2.2,3.3,4.4,5.5,6.6,7.7,8.8,9.9,10.10,11.11,12.12} <-- the input

Total : 82.83

Average : 6.9025

HIghest Month : December

Lowest Month : January

Explanation / Answer

Please find the required solution:

package workspace;

public class RainFall {

   private String[] monthNames = { "January", "February", "March", "April",
           "May", "June", "July", "August", "September", "October",
           "November", "December" };
   // variable used to store amount of rainfall in inches
   double values[];

   // One Argument constructor
   public RainFall(double[] amountOfRainFall) {
       this.values = amountOfRainFall;
   }

   // getters and setters for rainfall
   public double[] getValues() {
       if (values == null)
           return new double[12];
       return values;
   }

   public void setValues(double[] amountOfRainFall) {
       this.values = amountOfRainFall;
   }

   // method returns computes and returns sum of rainfall in year
   public double getTotalRainFall() {
       double sum = 0;
       for (double eachmonthValue : getValues()) {
           sum += eachmonthValue;
       }
       return sum;
   }

   // method returns computes and returns average rainfall
   public double getAverageRainFall() {
       return getTotalRainFall() / values.length;
   }

   // method month with most rain
   public String getHighestMonth() {
       double max = values[0];
       int result = 0;
       for (int i = 1; i < getValues().length; i++) {
           if (max < values[i]) {
               max = values[i];
               result = i;
           }
       }
       return monthNames[result];
   }

   // method month with min rain
   public String getLowestMonth() {
       double min = values[0];
       int result = 0;
       for (int i = 1; i < getValues().length; i++) {
           if (min > values[i]) {
               min = values[i];
               result = i;
           }
       }
       return monthNames[result];
   }

   public static void main(String[] args) {
       double[] d1 = { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.10,
               11.11, 12.12 };
       RainFall rainfall = new RainFall(d1);
       System.out.println("Total: " + rainfall.getTotalRainFall());
       System.out.println("Average: " + rainfall.getAverageRainFall());
       System.out.println("Highest Month: " + rainfall.getHighestMonth());
       System.out.println("Lowest Month: " + rainfall.getLowestMonth());
   }
}

Sample output/testcase:

Total: 82.83000000000001
Average: 6.902500000000001
Highest Month: December
Lowest Month: January

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