Learn Java by Example: Java Program to Calculate Average Using Arrays

Java Program to Calculate Average Using Arrays

In this program, you’ll learn to calculate the average of the given arrays in Java.


Example: Program to Calculate Average Using Arrays

public class Average{

    public static void main(String[] args){
        double[] numArray = { 45.3, 67.5, -45.6, 20.34, 33.0, 45.6 };
        double sum = 0.0;

        for (double num: numArray) {
           sum += num;

        double average = sum / numArray.length;
        System.out.format("The average is: %.2f", average);


The average is: 27.69

In the above program, the numArray stores the floating-point values whose average is to be found.

Then, to calculate the average, we need to first calculate the sum of all elements in the array. This is done using a for-each loop in Java.

Finally, we calculate the average by the formula:

average = sum of numbers / total count

In this case, the total count is given by numArray.length.

Finally, we print the average using format() function so that we limit the decimal points to only 2 using "%.2f"



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