ArrayPrintingExamples.java

import java.util.Arrays;

public class ArrayPrintingExamples {

    public static void main(String[] args) {

        int[][] array2D = new int[][]{
                    {1,2,3},
                    {4,5,6},
                    {7,8,9}
        };

        System.out.println("Example 0");
        for (int i = 0; i < array2D.length; i++) {
            int [] array1D = array2D[i];
            for (int j = 0; j < array1D.length; j++) {
                System.out.print(array1D[j]);
            }
            System.out.println();
        }

        System.out.println("Example 1");
        for (int i = 0; i < array2D.length; i++) {
            for (int j = 0; j < array2D[i].length; j++) {
                System.out.print(array2D[i][j]);
            }
            System.out.println();
        }

        System.out.println("Example 2");
        for (int i = 0; i < array2D.length; i++) {
            printArray(array2D[i]);
            System.out.println();
        }

        System.out.println("Example 3");
        for (int[] array1D : array2D) {
            for (int element : array1D) {
                System.out.print(element);
            }
            System.out.println();
        }

        System.out.println("Example 4");
        for (int[] array1D : array2D) {
            System.out.println(Arrays.toString(array1D));
        }

        System.out.println("etc...");
    }

    static void printArray(int[] array) {
        for (int i = 0; i < array.length; i++) {
            System.out.print(array[i]);
        }
    }
}