How to create a Two Dimensional Array in Java - Step by Step Examples

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How to create a Two Dimensional Array in Java ?

Answer

To create a Two Dimensional Array in Java, you can declare and initialize an array with specified dimensions.

✐ Examples

1 Creating a 2D Array of Integers

In this example,

We declare a 2D array of integers named matrix with dimensions 3x3.
We assign values to the elements of the array.
The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

Java Program

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int[][] matrix = new int[3][3];
        for (int row = 0; row < matrix.length; row++) {
            for (int col = 0; col < matrix[row].length; col++) {
                matrix[row][col] = row + col;
            }
        }
        System.out.println(Arrays.deepToString(matrix));
    }
}

Output

[[0, 1, 2], [1, 2, 3], [2, 3, 4]]

2 Creating a 2D Array of Strings

In this example,

We declare a 2D array of strings named matrix with dimensions 2x2.
We assign values to the elements of the array.
The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

Java Program

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        String[][] matrix = new String[2][2];
        for (int row = 0; row < matrix.length; row++) {
            for (int col = 0; col < matrix[row].length; col++) {
                matrix[row][col] = "Row " + (row + 1) + ", Column " + (col + 1);
            }
        }
        System.out.println(Arrays.deepToString(matrix));
    }
}

Output

[[Row 1, Column 1, Row 1, Column 2], [Row 2, Column 1, Row 2, Column 2]]

Summary

In this tutorial, we learned How to create a Two Dimensional Array in Java language with well detailed examples.

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How to create a Two Dimensional Array in Java - Step by Step Examples

How to create a Two Dimensional Array in Java ?

Answer

✐ Examples

1 Creating a 2D Array of Integers

Java Program

Output

2 Creating a 2D Array of Strings

Java Program

Output

Summary

More Java Arrays Tutorials