class example2
{
   public static void main(String[] args)
   {
      int[][] array = {
         { 10, },
         { 20, 21, 22, },
         { 30, 31, 32, 33, 34, },
      };

      System.out.println("Rows:");
      System.out.println("  array.length = "
                                       + array.length);

      System.out.println();
      System.out.println("Columns:");
      for(int i = 0; i < array.length; i++)
         System.out.println(
               "  Column " + i
             + " has length: array[" + i + "].length = "
             + array[i].length);

      System.out.println();
      System.out.println("Entire array:");
      for(int i = 0; i < array.length; i++)
      {
         for(int j = 0; j < array[i].length; j++)
            System.out.print(" " + array[i][j]);
         System.out.println();
      }

      System.out.println();
      System.out.println("Just the 2nd row array:");
      int[] secondRow = array[1];
      for(int j = 0; j < secondRow.length; j++)
         System.out.print(" " + secondRow[j]);
      System.out.println();
   }
}