Java - Write a program using the following static void methods

Question

Write the following methods to

1. read the content of an array of 5 doubles public static double[] readingArray()
2. find and print: the sum of the elements in an array of 5 double public static void sum(double [] array)
3. find and print: the average of the elements in an array of 5 doubles pubic static void avg (double [] array) In the main method

• invoke readingArray and enter the following numbers 50 20 10 40 30
• invoke sum
• invoke avg.

I do not what I am doing wrong with the methods public static void sum and public static avg(double [] array). Buy I cannot print the results.

run: Reading: Please enter array elements: 50 20 10 40 30 The Sum: The avg: BUILD SUCCESSFUL (total time: 9 seconds)

import java.util.Scanner;
public class Quiz10_Op2 {
    public static void main(String[] args){
        double[] array;   
            
        System.out.println("Reading: "); 
        array = readingArray();   
            
        System.out.println("The Sum: " ); 
        sum(array); 
    
        System.out.println("The avg: " );
        avg(array); 
    }
        
    public static double[] readingArray(){   
        Scanner input = new Scanner(System.in);
        double array[] = new double[5];
        System.out.print("Please enter array elements: ");
        for(int i=0; i < 5; i++){
            array[i] = input.nextDouble();
        }
        return array;
        }
    public static void sum(double [] array){
        double sum = array[0];  
        for (int i = 0; i < array.length; i++) {  
            sum = sum + array[i];
        }
    }
    public static void avg (double [] array){
        double sum = array[0];
        for (int i = 0; i < array.length; i++) {  
            sum = sum + array[i];
        }
    
    }
} 

Answer 1

You forgot to print values.

public static void sum(double [] array){
    double sum = array[0];  
    for (int i = 0; i < array.length; i++) {  
        sum = sum + array[i];
    }
    System.out.println(sum); // This line
}
public static void avg (double [] array){
    double sum = array[0];
    for (int i = 0; i < array.length; i++) {  
        sum = sum + array[i];
    }
    System.out.println(sum/array.length); // This line
}