RainFall clss using Array. Write a RainFall class that stores the total rainfall

Question

RainFall clss using Array.

Write a RainFall class that stores the total rainfall for each of the 12 months into an array of doubles. The program should have methids that return the following:

- total rainfall for the year

- the average monthly rainfall

- the month with the most rain

- the month with the least rain

Demonstrate the class in a complete program. Input Validation: Do not accept negative numbers for monthly rainfall figures.

Code RainFall class your operation class and RainFallApp as the driver.

Please use Java and use comments to explain. Thank you!

Explanation / Answer

Rainfall.java

public class Rainfall {
   //Declaring array
   double rainfall[];

   //Parameterized constructor
   public Rainfall(double[] rainfall) {
       super();
       this.rainfall = rainfall;
   }
  
   //This method will calculate the total rainfall of the year
   public double totalRainFall()
   {
       //Declaring variable
       double sum=0.0;
       for(int i=0;i<rainfall.length;i++)
       {
           //calculating the sum
           sum+=rainfall[i];
       }
       return sum;
   }
  
   //This method will calculate the average of yearly rainfall
   public double average()
   {
       //Declaring variables
       double sum=0.0,average=0.0;
       for(int i=0;i<rainfall.length;i++)
       {
           //calculating the sum
           sum+=rainfall[i];
       }
      
       //calculating the average
       average=sum/rainfall.length;
       return average;
   }
  
   //This method will find the highest rainfall of the month
   public double highestRainfall()
   {
       double max=rainfall[0];
       for(int i=0;i<rainfall.length;i++)
       {
           if(max<rainfall[i])
               max=rainfall[i];
       }
       return max;
   }
  
   //This method will find the lowest rainfall of the month
   public double lowestRainfall()
   {
       double min=rainfall[0];
       for(int i=0;i<rainfall.length;i++)
       {
           if(min>rainfall[i])
               min=rainfall[i];
       }
       return min;
   }
  

}

____________

RainFallApp.java

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

public class RainFallApp {

   public static void main(String[] args) {
       double rain=0.0;
       //Creating an array of size 12
       double[] rainfall=new double[12];
      
       //DecimalFormat class is used to format the output
               DecimalFormat df=new DecimalFormat("#.##");
              
       //Scanner object is used to get the inputs entered by the user
               Scanner sc=new Scanner(System.in);
              
               int i=0;
              
               while(i<12)
               {
                   //Getting the monthly rain fall of each month
                   System.out.print("Enter the rainfall of month "+(i+1)+" :");
                   rain=sc.nextDouble();
                  
                   //if the rainfall cvalue is negative then display error message
                   if(rain<0)
                   {
                       System.out.println(" Invalid.Must be positive Number");
                       continue;
                   }
                   else
                   {
                       //Populating the user entered value into an array
                       rainfall[i]=rain;
                       i++;
                   }
               }
              
               //Creating an object to Rainfall class by passing the array as argument
               Rainfall rf=new Rainfall(rainfall);
              
               //Displaying the total rainfall of the year
               System.out.println("Total rainfall for the year :"+df.format(rf.totalRainFall()));
              
               //Displaying the average rainfall of the year
               System.out.println("The average monthly rainfall :"+df.format(rf.average()));
              
               //Displaying the highest rainfall of the year
               System.out.println("The month with the most rain :"+df.format(rf.highestRainfall()));
              
               //Displaying the lowest rainfall of the year
               System.out.println("The month with the least rain :"+df.format(rf.lowestRainfall()));

   }

}

___________________

Output:

Enter the rainfall of month 1 :12.2
Enter the rainfall of month 2 :10.2
Enter the rainfall of month 3 :8.8
Enter the rainfall of month 4 :9.2
Enter the rainfall of month 5 :6.4
Enter the rainfall of month 6 :10.2
Enter the rainfall of month 7 :14.6
Enter the rainfall of month 8 :16.6
Enter the rainfall of month 9 :12.9
Enter the rainfall of month 10 :14.3
Enter the rainfall of month 11 :10.7
Enter the rainfall of month 12 :9.8
Total rainfall for the year :135.9
The average monthly rainfall :11.33
The month with the most rain :16.6
The month with the least rain :6.4

___________Thank You

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