```java
import java.util.Scanner;

public class AverageCalculator {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        // Prompt the user to enter the number of elements
        System.out.print("Enter the number of elements: ");
        int numElements = scanner.nextInt();

        // Create an array to store the numbers
        double[] numbers = new double[numElements];

        // Prompt the user to enter each number and store them in the array
        System.out.println("Enter " + numElements + " numbers:");
        for (int i = 0; i < numElements; i++) {
            System.out.print("Enter number " + (i + 1) + ": ");
            numbers[i] = scanner.nextDouble();
        }

        // Calculate the sum of all numbers in the array
        double sum = 0;
        for (double num : numbers) {
            sum += num;
        }

        // Calculate the average
        double average = sum / numElements;

        // Print the sum and average
        System.out.println("Average of the numbers: " + average + " and the sum is: " + sum);

        // Close the scanner
        scanner.close();
    }
}
```