Question

Using NetBeans, create a Java program called Average.java. The program should use the Scanner class to get 4 integers from the user and store them in variables. The program should calculate the average of the 6 numbers as a floating point. Output all of the original input and the calculated average in the Command window. The code is expected to be commented and user-friendly.

Answer 1

The average of the numbers can be calculated as the sum of all numbers divided by the number of elements.

In the question, it is mentioned that the program should find an average of 4 numbers in one place whereas in the third line it is written to find an average of 6 numbers.

I have taken an array of 6 elements to store values and a variable to store the average value of the 6 numbers.

The program outputs the average values as a floating-point number.

If you want to find the average of 4 elements you can change the array size to 4 and for loop to run for 4 times.

Code:-

package average;

import java.util.Scanner; //Scanner class

public class Average {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in); //Scanner class object to take input
        double arr[] = new double[6]; //array of double variables to store value
        double average = 0; //variable to store average value
        
        for(int i=0;i<6;i++){ //loop to take input
            arr[i] = sc.nextDouble(); // taking input
        }
        
        for(int i=0;i<6;i++){ // loop to calculate sum
            average = average + arr[i]; //calculating sum of 6 variables
        }
        average /= 6; //dividing by 6 to get average
        
        System.out.println(average); // printing the result
    }
}

Output:-

The code is well commented and user-friendly.