Average Rainfall Main Class Using nested for loops,input validation - Average is off

[CyberOps]

Hello - I follow posts on this forum and this is my first posting, thank you.

When input validation for the first months rainfall is non-negative, this results in correct average rainfall.
When input validation is used for the first months rainfall I'm prompted to input a positive number, which is 2.
When asked to input rainfall, in inches, for each month, I begin with input -3, I am again prompted to re-enter
a positive, I enter 3. What happens is, whichever positive integer I input after I had entered a negative for
the first months rainfall, the average would be off by the positive number inputted.
Thank you for your help and advice.

package averagerainfall;
import java.util.Scanner;
 
public class AverageRainfall 
{
    public static void main(String[] args)
    {
        int maxYears;
        int totalMonths;
        int monthCount = 0;
        double rainInches = 0.0;
        double totalInches = 0.0;          // Initialize total inches or rain
        double averageRainInches = 0.0;    // Initialize total average of rain
 
        Scanner keyboard = new Scanner(System.in);
 
        System.out.println("Enter the number of years: ");
        maxYears = keyboard.nextInt();
 
        while (maxYears < 1)
        {
            System.out.println("Invalid. Enter 1 or greater:");
            maxYears = keyboard.nextInt();
        }
        totalMonths = maxYears * 12;
        System.out.print("Enter the rainfall, in inches, for each month.\n");
 
        for (int yearCount = 1; yearCount <= maxYears; yearCount++)
        {
             for (monthCount = 1; monthCount <= 12; monthCount++)
            {
                System.out.println("Year " + yearCount + " month " + monthCount + ":");
                rainInches = keyboard.nextInt();
 
                while ( rainInches < 0 )
                {
                    System.out.println("Invalid. Enter 0 or greater:");
                    rainInches = keyboard.nextInt();
                    totalInches += rainInches;
                }   
                totalInches += rainInches;
            }
        }
        averageRainInches = (double) totalInches / totalMonths;
 
        System.out.println("Number of months: " + totalMonths);
        System.out.println("Total rainfall: " + totalInches);
        System.out.println("Average monthly rainfall: " + averageRainInches + " inches");
    }
 
}

--- Update ---

Please disregard the first sentence, thank you.

[GregBrannon]

Welcome to the forum! Thanks for taking the time to learn to post code correctly.

Study this and determine how it could contribute to your complaint:

while ( rainInches < 0 )
{
    System.out.println("Invalid. Enter 0 or greater:");
    rainInches = keyboard.nextInt();
    totalInches += rainInches;
}   
totalInches += rainInches;

[CyberOps]

All I had to do was remove totalInches += rainInches; from the last while statement. Wow thank you! I have spent hours learning to write this code.

[GregBrannon]

You're welcome.