how to count number of rows in excel code example

Example 1: Excel sheet count rows

=COUNTIF(RANGE, CONDITION)
Example: =COUNTIF(C1:C30, "Paris")

Example 2: how to count row

Row number always starts with 1
My last rowNumber is my row count
When I move my cursor to the last location to get rowCount

Example 3: how to get row count

Get the row count of the ResultSet
Move the pointer to the last row and get the row number

  rs.last();
        int rowCount = rs.getRow();
        System.out.println(rowCount);