/**
   This program uses the length fields of a 2D array
   to display the number of rows, and the number of
   columns in each row.
*/

public class Lengths
{
   public static void main(String[] args)
   {
      // Declare a 2D array with 3 rows 
      // and 4 columns.

      int[][] numbers = { { 1,  2,  3,  4  },
                          { 5,  6,  7,  8  },
                          { 9, 10, 11, 12 } };

      // Display the number of rows.
      System.out.println("The number of " +
                "rows is " + numbers.length);

      // Display the number of columns in each row.
      for (int index = 0; index < numbers.length; index++)
      {
         System.out.println("The number of " +
              "columns in row " + index + " is " +
              numbers[index].length);
      }
   }
}