Arrays processing 1

import java.util.Scanner;

public class processingArrays {

    public static void main(String[] args) {

        // processing arrays with specific numbers like evens or 1-9

        int[] numbers = new int[9];
        for (int i=0; i< numbers.length; i++){
            numbers[i] = i+1;
        }


        // processing arrays with user input
        Scanner kb = new Scanner(System.in);

        String[] stringArray = new String[5];
        System.out.println("processing arrays with user input");
        for (int i=0; i< stringArray.length; i++){
            System.out.println("Enter your array value");
            stringArray[i]= kb.nextLine();

        }
        System.out.println("Testing \n" + stringArray[2]);
        System.out.println("printed the value at stringArray[2]");

        System.out.println();

        // initializing an array with random values between 50 and 100
        int [] random = new int[12];
        for (int i=0; i<random.length; i++)
            random[i] = 50 + (int)(Math.random( )* 51);

        System.out.println();

        // printing arrays.  One way with the for loop.  Print array "numbers"
        System.out.println("printing arrays.  One way with the for loop.  Print array \"numbers\"");
        for (int i =0; i<numbers.length; i++)
            System.out.print(numbers[i] + " ");

        System.out.println();// goto next line
        System.out.println();

        System.out.println("Printing array \"stringArray\" using for loop");
        for (int i = 0; i<stringArray.length; i++)
            System.out.print(stringArray[i]+ " ");

        System.out.println(); // goto next line
        System.out.println();

        // printing arrays using a for each loop
        System.out.println("printing arrays using a for each loop");
        for (int i : random)
            System.out.print(i+" ");

        // goto next line
        System.out.println();
        System.out.println();

        // summing all the elements
        System.out.println("the sum of all the elements of the array");
        double[] decimal = new double[8];
        double sum=0;
        for (int i=0; i<decimal.length; i++){
            decimal[i]= (Math.random() * 10 );
            decimal[i]= ((int)(decimal[i] * 100))/100.0;  // this is a neat way to round
            sum = sum + decimal[i];
            }
        for (double e : decimal){
            System.out.print(e+" ");
        }
        System.out.println();
        System.out.println(sum);
        System.out.println();

        // finding the largest element
        System.out.println("the largest element of the array");
        int[] elements = new int[9];
        int indexOfLargestElement=0;
        int largestElement=elements[0];
        for (int i=0; i<elements.length; i++){
            elements[i] = (int)(Math.random()* 31);
        }
        for (int i =1; i< elements.length-1; i++){
            if (elements[indexOfLargestElement]< elements[i]){
                indexOfLargestElement = i;
                largestElement=elements[i];
            }
            }
        for (int e : elements)
        System.out.print(e+ " ");
        System.out.println();
        System.out.println(elements[indexOfLargestElement]);

    }

}