09 May Multidimensional Arrays in Java

In the last lesson, we learned about One-Dimensional Arrays in Java and how to use them. Now, we will see about a concept of arrays in Java i.e. Multidimensional Arrays. Multi-dimensional arrays as the name suggests are arrays of arrays. You need to use two square brackets to declare a multidimensional array, unlike one-dimensional array.

Let us see an example to declare a 2 by 3 multidimensional array,

int result[][] = new int[2][3];

The following figure displays how a multidimensional array forms a 2×3 matrix,

Above, the left index determines row and the right index determines column.

We will now see how to display each element from our 2×3 matrix,

public class StudyopediaDemo {

   public static void main(String args[]) {
      int i, j, k = 0; 
      int result[][]= new int[2][3];  
 
    for(i=0; i<2; i++)      
      for(j=0; j<3; j++) {
        result[i][j] = k;
        k++;      
      } 
 
    for(i=0; i<2; i++) {
      for(j=0; j<3; j++)
        System.out.print(result[i][j] + " ");
        System.out.println();     
      }
    } 
}

The following is the output displaying each element,

In this lesson, we saw how to work with Multidimensional arrays in Java.