Java Multidimensional Arrays Program Example

Learn how to create Java Multidimensional Arrays Program with examples.
A multidimensional array in Java stores data in rows and columns, making it ideal for representing matrices and tabular data.

Code Explanation (Step-by-Step)

•  Create a Scanner class object to accept user input.
•  Declare the size of the multidimensional array.
•  Use the sc.nextInt() method to enter the number of rows and columns.
•  Traverse the nested for loops based on the number of rows and columns.
•  Enter the matrix elements and store them in the array using a[i][j].
•  Traverse another set of nested for loops to display the matrix elements.
•  Print the multidimensional array (matrix) in row and column format.

				
					import java.util.Scanner;

public class MultidimensionalArray {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int row, column;
        int a[][] = new int[5][5];

        System.out.println("Enter the number of rows :");
        row = sc.nextInt();

        System.out.println("Enter the number of columns :");
        column = sc.nextInt();

        System.out.println("Enter the elements to create Matrix :");

        for (int i = 0; i < row; i++) {
            for (int j = 0; j < column; j++) {
                a[i][j] = sc.nextInt();
            }
        }

        System.out.println("Now the Multidimensional Matrix is :");

        for (int i = 0; i < row; i++) {
            for (int j = 0; j < column; j++) {
                System.out.print(a[i][j] + " ");
            }
            System.out.println();
        }

        sc.close();
    }
}

Output :-
Enter the number of rows :-
3
Enter the number of columns :-
4
Enter the elements to create Matrix :-
12
23
34
56
76
43
78
98
34
30
74
89
Now the Multidimensional Matrix is :-
12 23 34 56
76 43 78 98
34 30 74 89

What Are Java Multidimensional Arrays?

Java Multidimensional Arrays are arrays that contain one or more arrays as their elements. They are used to store data in a tabular format consisting of rows and columns. The most common type of multidimensional array is a two-dimensional (2D) array, which is often used to represent matrices, tables, and grids.

A multidimensional array is also known as an array of arrays because each element of the main array can hold another array.

int[][] a = new int[3][5];

In this example :`

  • 3 represents the number of rows.
  • 5 represents the number of columns.
  • The array can store a total of 3 × 5 = 15 elements.

Declare the Array Structure

  1. 10  20   30    40
  2. 50  60   70    80
  3. 90 100 110 111

Explain Here:

  • Row 0: 10  20   30   40
  • Row 1: 50 60   70   80
  • Row 2: 90 100 110 111

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