Storing value in array and iterate

import java.io.*;

public class Solution {
    public static void main(String[] args) throws IOException {
        int[] array1; //declare an int array... int array1[] is also valid
        array1 = new int[10]; //initialize it to be able to store 10 values

        int[] array2 = new int[5]; //declaration and initialization in one line
        int[] array3 = new int[]{1, 2, 3, 18, 2}; //declare, initialize and fill with some values

        array1[0] = 10; //assign a value
        array1[9] = 5;
        //array1[10] = 11; //Exception... ArrayIndexOutOfBounds

        //declare, initialize and fill with three values you enter from the console, array length is 3
        System.out.print("Please input three numbers: ");
        BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
        int[] array4 = new int[]{getNum(console), getNum(console), getNum(console)};
        console.close();

        //looping over an array
        //1. if you need the index
        System.out.println("\narray3:");
        for (int i = 0; i < array3.length; i++) {
            System.out.print(array3[i] + " ");
        }

        //2. if the index doesn't matter to you, i.e. you do not need to modify array elements
        System.out.println("\n\narray4:");
        for (int number : array4) {
            System.out.print(number + " ");
        }
    }

    private static int getNum(BufferedReader r) throws IOException {
        return Integer.parseInt(r.readLine());
    }
}