Question

How to get rows and columns of a 2D array in Java

Answer 1

package javaapplication1;

public class JavaApplication1 {

    public static void main(String[] args) {

        try {

            int[][] arr2d = new int[3][4];

            int rows = arr2d.length;
            int cols = arr2d[0].length;

            System.out.println(rows);
            System.out.println(cols);
            
        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

/*
             
run:

3
4
    
 */

 

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